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Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

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Qingdao Beluga Import and Export Co., LTD

RESINIFERATOXIN CAS:57444-62-9 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic intermed

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Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

Triumph International Development Limilted

Appearance:off-white to white solid Storage:Store in a cool,dry place and keep away from direct strong light Package:As customer request Application:Used for Synthesis API and Research Transportation:As customer request Port:Qingda

RESINIFERATOXIN 57444-62-9

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Shaanxi Cuicheng Biomedical Technology Co., Ltd.

Why Choose Us: 1. Factory direct sales, so we can provide the competitive price and high quality product base on 8 years of production and R&D experience. 2. It is available in stock for quick shipment.Products could be packaged according to cu

RESINIFERATOXIN

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Zibo Hangyu Biotechnology Development Co., Ltd

Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi

Resiniferatoxin CAS NO.57444-62-9

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EAST CHEMSOURCES LIMITED

factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

Resiniferatoxin

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Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W

RESINIFERATOXIN

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KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

Resiniferatoxin

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SAGECHEM LIMITED

SAGECHEM is a chemical R&D, manufacturing and distribution company in China since 2009, including pharmaceutical intermediates, agrochemical, dyestuff intermediates, organosilicone, API and etc. We also offer a full range of services in

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Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

Resiniferatoxin

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Hebei Mojin Biotechnology Co.,Ltd

1, High quality with competitive price:2, Fast and safe delivery3.Excellent pre-sales and after-sales service4. Well-trained and professional technologist and sales with rich experience in the field for 5-10 yearsAppearance:see detailed specification

Shanghai Acmec Biochemical Technology Co., Ltd.

Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea

Acmec Resiniferatoxin 5mg

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Henan Allgreen Chemical Co.,Ltd

high quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea

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Chengdu Lemeitian Pharmaceutical Technology Co,. Ltd

1.High quality and competetive price1)We are manufacturer with own lab and factory, can provide high quality products with factory price. 2)Products purity is test by our quality department strictly before sending, and you can also ask the third test

Resiniferatoxin CAS No:57444-62-9

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Henan Tianfu Chemical Co., Ltd.

1.Our services:A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.

Hebei Sankai Chemical Technology Co., Ltd

1. Product advantages? High purity, all above 98.5%, no impurities after dissolution? We will test each batch to ensure quality? OEM and private brand services designed for free? Various cap colors available? We can also provide MT1 peptide powder2.

RESINIFERATOXIN

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Antimex Chemical Limied

Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

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Hubei Langyou International Trading Co., Ltd

Resiniferatoxin Application:Resiniferatoxin

Resiniferatoxin

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Henan Kanbei Chemical Co.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

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Shanghai Chinqesen Biotechnology Co., Ltd.

Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen

57444-62-9

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Hunan Longxianng Runhui Trading Co.,Ltd

Resiniferatoxin Application:Resiniferatoxin Transportation:By express (Door to door) such as FEDEX, DHL, EMS for small amount. By air(airport to airport) or by sea LCL/FCL for large amount.

Resiniferatoxin

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Shanghai Yuanye Bio-Technology Co., Ltd.

Known for its best quality and competitve price, this chemicals we offered is widely appreciated by our customers.Appearance:White powder Storage:keep sealed and keep from direct light Package:According client's requirements Application:pharmaceutica

Resiniferatoxin manufacturer

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ZHEJIANG JIUZHOU CHEM CO.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

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LEAP CHEM Co., Ltd.

Best Seller, High Quality, Competitive Price, Fast Delivery, Quick ResponseAppearance:powder, or liquid Storage:Stored in room temperature, ventilated place Package:Bottle, barrel, cargo, container, etc. Application:Pharmaceuticals, intermediates, AP

RESINIFERATOXIN

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NUTROCHEM- MANUFACTURE PLACE

best seller Application:API

RESINIFERATOXIN

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Changzhou Extraordinary Pharmatech co.,LTD

Changzhou Extraordinary Pharmatech co., LTD. As a leading chemical manufacturer and supplier in China.DAS authentication is passed.We can provide the popular precursor chemicals, we have our own strong R & D team, have our own laboratories and fa

Resiniferatoxin

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Shaanxi Mingqi Chemical Co., Ltd

Known for its best quality and competitve price, this chemicals we offered is widely appreciated by our customers. Our advantages:1, High quality with competitive price:1) Standard:BP/USP/EP/Enterprise standard2) All Purity≥99%3) We are manufacturer

Resiniferatoxin manufacturer

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Jilin haofei import and export trade Co.,Ltd

Price, service, company and transport advantage: 1.Best service, high quality and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). ? 3. It's customers' right to choose the packing way for his products fro

Best price/ Resiniferatoxin CAS NO.57444-62-9

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Hubei Jusheng Technology Co., Ltd.,

1,Best Quality: Our products have exported to Germany, Spain, UK, USA, Australia, Middle East, and so on other countries, and we have got very good feedback from our customers.so

Resiniferatoxin

Cas:57444-62-9

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Synthetic route

2-(4-((tert-butyldimethylsilyl)oxy)-3-methoxyphenyl)acetic acid
1344662-01-6

2-(4-((tert-butyldimethylsilyl)oxy)-3-methoxyphenyl)acetic acid

C31H39ClO5Si

C31H39ClO5Si

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Stage #1: 2-(4-((tert-butyldimethylsilyl)oxy)-3-methoxyphenyl)acetic acid; C31H39ClO5Si With caesium carbonate In N,N-dimethyl-formamide at 20℃; for 5.66667h;
Stage #2: With tetrabutyl ammonium fluoride In tetrahydrofuran at 0℃; for 0.583333h;
92%
Homovanillic acid
306-08-1

Homovanillic acid

Resininiferonol-9-13-14-ortho-phenyl acetate

Resininiferonol-9-13-14-ortho-phenyl acetate

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
With di-tert-butyl-diazodicarboxylate; triphenylphosphine In tetrahydrofuran at 20℃; for 1h; Mitsunobu reaction;67%
C17H28O5

C17H28O5

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 32 steps
1.1: Dowex 50W / tetrahydrofuran; water / 12 h / 90 °C
2.1: pyridine / dichloromethane / 1 h / 0 - 20 °C
3.1: (+)-CSA / benzene / 2 h / 20 °C / Inert atmosphere
4.1: triethylamine / dichloromethane / 0.75 h / 20 °C / Inert atmosphere
5.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
5.2: 0.42 h
6.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
7.1: triethylamine / dichloromethane / 1.25 h / 0 °C
8.1: dmap / toluene / 1.5 h / 20 °C / Darkness
9.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
10.1: potassium carbonate / methanol / 7.5 h / 0 °C
11.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
12.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
13.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
14.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
15.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
16.1: triethylamine / dichloromethane / 1.5 h / 0 °C
17.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
18.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
18.2: (+)-CSA / 0.33 h / 50 °C
19.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
20.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
20.2: 0.5 h / 20 °C / Inert atmosphere
21.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
22.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
23.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
23.2: 1.5 h
24.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
25.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
26.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
27.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
28.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
28.2: 0.33 h / -20 °C / Inert atmosphere
29.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
30.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
31.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
31.2: 0.42 h / 150 °C
31.3: 0.5 h / 0 - 20 °C
32.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
32.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 33 steps
1.1: Dowex 50W / tetrahydrofuran; water / 12 h / 90 °C
2.1: pyridine / dichloromethane / 1 h / 0 - 20 °C
3.1: (+)-CSA / benzene / 2 h / 20 °C / Inert atmosphere
4.1: triethylamine / dichloromethane / 0.75 h / 20 °C / Inert atmosphere
5.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
5.2: 0.42 h
6.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
7.1: triethylamine / dichloromethane / 1.25 h / 0 °C
8.1: dmap / toluene / 1.5 h / 20 °C / Darkness
9.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
10.1: potassium carbonate / methanol / 7.5 h / 0 °C
11.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
12.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
13.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
14.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
15.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
16.1: triethylamine / dichloromethane / 1.5 h / 0 °C
17.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
18.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
18.2: (+)-CSA / 0.33 h / 50 °C
19.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
20.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
20.2: 0.5 h / 20 °C / Inert atmosphere
21.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
22.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
23.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
23.2: 1.5 h
24.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
24.2: 1.5 h
25.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
26.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
27.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
28.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
29.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
29.2: 0.33 h / -20 °C / Inert atmosphere
30.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
31.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
32.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
32.2: 0.42 h / 150 °C
32.3: 0.5 h / 0 - 20 °C
33.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
33.2: 0.58 h / 0 °C
View Scheme
C12H20O5

C12H20O5

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 31 steps
1.1: pyridine / dichloromethane / 1 h / 0 - 20 °C
2.1: (+)-CSA / benzene / 2 h / 20 °C / Inert atmosphere
3.1: triethylamine / dichloromethane / 0.75 h / 20 °C / Inert atmosphere
4.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
4.2: 0.42 h
5.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
6.1: triethylamine / dichloromethane / 1.25 h / 0 °C
7.1: dmap / toluene / 1.5 h / 20 °C / Darkness
8.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
9.1: potassium carbonate / methanol / 7.5 h / 0 °C
10.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
11.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
12.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
13.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
14.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
15.1: triethylamine / dichloromethane / 1.5 h / 0 °C
16.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
17.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
17.2: (+)-CSA / 0.33 h / 50 °C
18.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
19.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
19.2: 0.5 h / 20 °C / Inert atmosphere
20.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
21.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
22.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
22.2: 1.5 h
23.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
24.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
25.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
26.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
27.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
27.2: 0.33 h / -20 °C / Inert atmosphere
28.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
29.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
30.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
30.2: 0.42 h / 150 °C
30.3: 0.5 h / 0 - 20 °C
31.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
31.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 32 steps
1.1: pyridine / dichloromethane / 1 h / 0 - 20 °C
2.1: (+)-CSA / benzene / 2 h / 20 °C / Inert atmosphere
3.1: triethylamine / dichloromethane / 0.75 h / 20 °C / Inert atmosphere
4.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
4.2: 0.42 h
5.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
6.1: triethylamine / dichloromethane / 1.25 h / 0 °C
7.1: dmap / toluene / 1.5 h / 20 °C / Darkness
8.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
9.1: potassium carbonate / methanol / 7.5 h / 0 °C
10.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
11.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
12.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
13.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
14.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
15.1: triethylamine / dichloromethane / 1.5 h / 0 °C
16.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
17.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
17.2: (+)-CSA / 0.33 h / 50 °C
18.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
19.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
19.2: 0.5 h / 20 °C / Inert atmosphere
20.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
21.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
22.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
22.2: 1.5 h
23.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
23.2: 1.5 h
24.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
25.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
26.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
27.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
28.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
28.2: 0.33 h / -20 °C / Inert atmosphere
29.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
30.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
31.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
31.2: 0.42 h / 150 °C
31.3: 0.5 h / 0 - 20 °C
32.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
32.2: 0.58 h / 0 °C
View Scheme
C19H24O6

C19H24O6

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 30 steps
1.1: (+)-CSA / benzene / 2 h / 20 °C / Inert atmosphere
2.1: triethylamine / dichloromethane / 0.75 h / 20 °C / Inert atmosphere
3.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
3.2: 0.42 h
4.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
5.1: triethylamine / dichloromethane / 1.25 h / 0 °C
6.1: dmap / toluene / 1.5 h / 20 °C / Darkness
7.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
8.1: potassium carbonate / methanol / 7.5 h / 0 °C
9.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
10.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
11.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
12.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
13.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
14.1: triethylamine / dichloromethane / 1.5 h / 0 °C
15.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
16.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
16.2: (+)-CSA / 0.33 h / 50 °C
17.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
18.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
18.2: 0.5 h / 20 °C / Inert atmosphere
19.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
20.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
21.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
21.2: 1.5 h
22.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
23.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
24.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
25.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
26.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
26.2: 0.33 h / -20 °C / Inert atmosphere
27.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
28.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
29.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
29.2: 0.42 h / 150 °C
29.3: 0.5 h / 0 - 20 °C
30.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
30.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 31 steps
1.1: (+)-CSA / benzene / 2 h / 20 °C / Inert atmosphere
2.1: triethylamine / dichloromethane / 0.75 h / 20 °C / Inert atmosphere
3.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
3.2: 0.42 h
4.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
5.1: triethylamine / dichloromethane / 1.25 h / 0 °C
6.1: dmap / toluene / 1.5 h / 20 °C / Darkness
7.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
8.1: potassium carbonate / methanol / 7.5 h / 0 °C
9.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
10.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
11.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
12.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
13.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
14.1: triethylamine / dichloromethane / 1.5 h / 0 °C
15.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
16.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
16.2: (+)-CSA / 0.33 h / 50 °C
17.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
18.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
18.2: 0.5 h / 20 °C / Inert atmosphere
19.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
20.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
21.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
21.2: 1.5 h
22.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
22.2: 1.5 h
23.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
24.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
25.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
26.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
27.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
27.2: 0.33 h / -20 °C / Inert atmosphere
28.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
29.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
30.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
30.2: 0.42 h / 150 °C
30.3: 0.5 h / 0 - 20 °C
31.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
31.2: 0.58 h / 0 °C
View Scheme
C21H24O6

C21H24O6

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 29 steps
1.1: triethylamine / dichloromethane / 0.75 h / 20 °C / Inert atmosphere
2.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
2.2: 0.42 h
3.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
4.1: triethylamine / dichloromethane / 1.25 h / 0 °C
5.1: dmap / toluene / 1.5 h / 20 °C / Darkness
6.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
7.1: potassium carbonate / methanol / 7.5 h / 0 °C
8.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
9.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
10.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
11.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
12.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
13.1: triethylamine / dichloromethane / 1.5 h / 0 °C
14.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
15.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
15.2: (+)-CSA / 0.33 h / 50 °C
16.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
17.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
17.2: 0.5 h / 20 °C / Inert atmosphere
18.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
19.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
20.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
20.2: 1.5 h
21.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
22.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
23.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
24.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
25.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
25.2: 0.33 h / -20 °C / Inert atmosphere
26.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
27.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
28.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
28.2: 0.42 h / 150 °C
28.3: 0.5 h / 0 - 20 °C
29.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
29.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 30 steps
1.1: triethylamine / dichloromethane / 0.75 h / 20 °C / Inert atmosphere
2.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
2.2: 0.42 h
3.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
4.1: triethylamine / dichloromethane / 1.25 h / 0 °C
5.1: dmap / toluene / 1.5 h / 20 °C / Darkness
6.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
7.1: potassium carbonate / methanol / 7.5 h / 0 °C
8.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
9.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
10.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
11.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
12.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
13.1: triethylamine / dichloromethane / 1.5 h / 0 °C
14.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
15.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
15.2: (+)-CSA / 0.33 h / 50 °C
16.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
17.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
17.2: 0.5 h / 20 °C / Inert atmosphere
18.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
19.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
20.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
20.2: 1.5 h
21.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
21.2: 1.5 h
22.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
23.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
24.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
25.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
26.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
26.2: 0.33 h / -20 °C / Inert atmosphere
27.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
28.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
29.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
29.2: 0.42 h / 150 °C
29.3: 0.5 h / 0 - 20 °C
30.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
30.2: 0.58 h / 0 °C
View Scheme
C24H32O6Si

C24H32O6Si

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 28 steps
1.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
1.2: 0.42 h
2.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
3.1: triethylamine / dichloromethane / 1.25 h / 0 °C
4.1: dmap / toluene / 1.5 h / 20 °C / Darkness
5.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
6.1: potassium carbonate / methanol / 7.5 h / 0 °C
7.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
8.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
9.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
10.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
11.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
12.1: triethylamine / dichloromethane / 1.5 h / 0 °C
13.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
14.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
14.2: (+)-CSA / 0.33 h / 50 °C
15.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
16.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
16.2: 0.5 h / 20 °C / Inert atmosphere
17.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
18.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
19.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
19.2: 1.5 h
20.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
21.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
22.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
23.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
24.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
24.2: 0.33 h / -20 °C / Inert atmosphere
25.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
26.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
27.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
27.2: 0.42 h / 150 °C
27.3: 0.5 h / 0 - 20 °C
28.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
28.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 29 steps
1.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
1.2: 0.42 h
2.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
3.1: triethylamine / dichloromethane / 1.25 h / 0 °C
4.1: dmap / toluene / 1.5 h / 20 °C / Darkness
5.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
6.1: potassium carbonate / methanol / 7.5 h / 0 °C
7.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
8.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
9.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
10.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
11.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
12.1: triethylamine / dichloromethane / 1.5 h / 0 °C
13.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
14.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
14.2: (+)-CSA / 0.33 h / 50 °C
15.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
16.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
16.2: 0.5 h / 20 °C / Inert atmosphere
17.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
18.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
19.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
19.2: 1.5 h
20.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
20.2: 1.5 h
21.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
22.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
23.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
24.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
25.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
25.2: 0.33 h / -20 °C / Inert atmosphere
26.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
27.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
28.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
28.2: 0.42 h / 150 °C
28.3: 0.5 h / 0 - 20 °C
29.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
29.2: 0.58 h / 0 °C
View Scheme
C15H9Cl3O3

C15H9Cl3O3

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 8 steps
1.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
2.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
3.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
4.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
4.2: 0.33 h / -20 °C / Inert atmosphere
5.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
6.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
7.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
7.2: 0.42 h / 150 °C
7.3: 0.5 h / 0 - 20 °C
8.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
8.2: 0.58 h / 0 °C
View Scheme
Homovanillic acid
306-08-1

Homovanillic acid

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: 1H-imidazole / N,N-dimethyl-formamide / 3 h / 0 - 20 °C
2.1: acetic acid / tetrahydrofuran; water / 1 h / 0 °C
3.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
3.2: 0.58 h / 0 °C
View Scheme
C29H38O8S4

C29H38O8S4

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 11 steps
1.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
2.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
2.2: 1.5 h
3.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
4.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
5.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
6.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
7.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
7.2: 0.33 h / -20 °C / Inert atmosphere
8.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
9.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
10.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
10.2: 0.42 h / 150 °C
10.3: 0.5 h / 0 - 20 °C
11.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
11.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 12 steps
1.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
2.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
2.2: 1.5 h
3.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
3.2: 1.5 h
4.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
5.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
6.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
7.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
8.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
8.2: 0.33 h / -20 °C / Inert atmosphere
9.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
10.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
11.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
11.2: 0.42 h / 150 °C
11.3: 0.5 h / 0 - 20 °C
12.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
12.2: 0.58 h / 0 °C
View Scheme
C21H24O7

C21H24O7

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 27 steps
1.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
2.1: triethylamine / dichloromethane / 1.25 h / 0 °C
3.1: dmap / toluene / 1.5 h / 20 °C / Darkness
4.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
5.1: potassium carbonate / methanol / 7.5 h / 0 °C
6.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
7.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
8.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
9.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
10.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
11.1: triethylamine / dichloromethane / 1.5 h / 0 °C
12.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
13.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
13.2: (+)-CSA / 0.33 h / 50 °C
14.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
15.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
15.2: 0.5 h / 20 °C / Inert atmosphere
16.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
17.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
18.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
18.2: 1.5 h
19.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
20.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
21.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
22.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
23.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
23.2: 0.33 h / -20 °C / Inert atmosphere
24.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
25.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
26.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
26.2: 0.42 h / 150 °C
26.3: 0.5 h / 0 - 20 °C
27.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
27.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 28 steps
1.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
2.1: triethylamine / dichloromethane / 1.25 h / 0 °C
3.1: dmap / toluene / 1.5 h / 20 °C / Darkness
4.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
5.1: potassium carbonate / methanol / 7.5 h / 0 °C
6.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
7.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
8.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
9.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
10.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
11.1: triethylamine / dichloromethane / 1.5 h / 0 °C
12.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
13.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
13.2: (+)-CSA / 0.33 h / 50 °C
14.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
15.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
15.2: 0.5 h / 20 °C / Inert atmosphere
16.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
17.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
18.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
18.2: 1.5 h
19.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
19.2: 1.5 h
20.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
21.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
22.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
23.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
24.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
24.2: 0.33 h / -20 °C / Inert atmosphere
25.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
26.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
27.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
27.2: 0.42 h / 150 °C
27.3: 0.5 h / 0 - 20 °C
28.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
28.2: 0.58 h / 0 °C
View Scheme
C20H22O7

C20H22O7

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 26 steps
1.1: triethylamine / dichloromethane / 1.25 h / 0 °C
2.1: dmap / toluene / 1.5 h / 20 °C / Darkness
3.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
4.1: potassium carbonate / methanol / 7.5 h / 0 °C
5.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
6.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
7.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
8.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
9.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
10.1: triethylamine / dichloromethane / 1.5 h / 0 °C
11.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
12.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
12.2: (+)-CSA / 0.33 h / 50 °C
13.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
14.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
14.2: 0.5 h / 20 °C / Inert atmosphere
15.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
16.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
17.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
17.2: 1.5 h
18.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
19.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
20.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
21.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
22.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
22.2: 0.33 h / -20 °C / Inert atmosphere
23.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
24.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
25.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
25.2: 0.42 h / 150 °C
25.3: 0.5 h / 0 - 20 °C
26.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
26.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 27 steps
1.1: triethylamine / dichloromethane / 1.25 h / 0 °C
2.1: dmap / toluene / 1.5 h / 20 °C / Darkness
3.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
4.1: potassium carbonate / methanol / 7.5 h / 0 °C
5.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
6.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
7.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
8.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
9.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
10.1: triethylamine / dichloromethane / 1.5 h / 0 °C
11.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
12.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
12.2: (+)-CSA / 0.33 h / 50 °C
13.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
14.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
14.2: 0.5 h / 20 °C / Inert atmosphere
15.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
16.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
17.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
17.2: 1.5 h
18.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
18.2: 1.5 h
19.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
20.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
21.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
22.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
23.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
23.2: 0.33 h / -20 °C / Inert atmosphere
24.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
25.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
26.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
26.2: 0.42 h / 150 °C
26.3: 0.5 h / 0 - 20 °C
27.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
27.2: 0.58 h / 0 °C
View Scheme
C21H24O9S

C21H24O9S

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 25 steps
1.1: dmap / toluene / 1.5 h / 20 °C / Darkness
2.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
3.1: potassium carbonate / methanol / 7.5 h / 0 °C
4.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
5.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
6.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
7.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
8.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
9.1: triethylamine / dichloromethane / 1.5 h / 0 °C
10.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
11.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
11.2: (+)-CSA / 0.33 h / 50 °C
12.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
13.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
13.2: 0.5 h / 20 °C / Inert atmosphere
14.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
15.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
16.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
16.2: 1.5 h
17.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
18.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
19.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
20.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
21.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
21.2: 0.33 h / -20 °C / Inert atmosphere
22.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
23.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
24.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
24.2: 0.42 h / 150 °C
24.3: 0.5 h / 0 - 20 °C
25.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
25.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 26 steps
1.1: dmap / toluene / 1.5 h / 20 °C / Darkness
2.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
3.1: potassium carbonate / methanol / 7.5 h / 0 °C
4.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
5.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
6.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
7.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
8.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
9.1: triethylamine / dichloromethane / 1.5 h / 0 °C
10.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
11.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
11.2: (+)-CSA / 0.33 h / 50 °C
12.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
13.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
13.2: 0.5 h / 20 °C / Inert atmosphere
14.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
15.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
16.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
16.2: 1.5 h
17.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
17.2: 1.5 h
18.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
19.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
20.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
21.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
22.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
22.2: 0.33 h / -20 °C / Inert atmosphere
23.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
24.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
25.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
25.2: 0.42 h / 150 °C
25.3: 0.5 h / 0 - 20 °C
26.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
26.2: 0.58 h / 0 °C
View Scheme
C25H25NO7S

C25H25NO7S

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 24 steps
1.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
2.1: potassium carbonate / methanol / 7.5 h / 0 °C
3.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
4.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
5.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
6.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
7.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
8.1: triethylamine / dichloromethane / 1.5 h / 0 °C
9.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
10.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
10.2: (+)-CSA / 0.33 h / 50 °C
11.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
12.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
12.2: 0.5 h / 20 °C / Inert atmosphere
13.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
14.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
15.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
15.2: 1.5 h
16.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
17.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
18.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
19.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
20.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
20.2: 0.33 h / -20 °C / Inert atmosphere
21.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
22.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
23.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
23.2: 0.42 h / 150 °C
23.3: 0.5 h / 0 - 20 °C
24.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
24.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 25 steps
1.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
2.1: potassium carbonate / methanol / 7.5 h / 0 °C
3.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
4.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
5.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
6.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
7.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
8.1: triethylamine / dichloromethane / 1.5 h / 0 °C
9.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
10.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
10.2: (+)-CSA / 0.33 h / 50 °C
11.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
12.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
12.2: 0.5 h / 20 °C / Inert atmosphere
13.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
14.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
15.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
15.2: 1.5 h
16.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
16.2: 1.5 h
17.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
18.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
19.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
20.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
21.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
21.2: 0.33 h / -20 °C / Inert atmosphere
22.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
23.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
24.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
24.2: 0.42 h / 150 °C
24.3: 0.5 h / 0 - 20 °C
25.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
25.2: 0.58 h / 0 °C
View Scheme
C26H26O6Se

C26H26O6Se

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 23 steps
1.1: potassium carbonate / methanol / 7.5 h / 0 °C
2.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
3.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
4.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
5.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
6.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
7.1: triethylamine / dichloromethane / 1.5 h / 0 °C
8.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
9.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
9.2: (+)-CSA / 0.33 h / 50 °C
10.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
11.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
11.2: 0.5 h / 20 °C / Inert atmosphere
12.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
13.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
14.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
14.2: 1.5 h
15.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
16.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
17.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
18.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
19.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
19.2: 0.33 h / -20 °C / Inert atmosphere
20.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
21.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
22.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
22.2: 0.42 h / 150 °C
22.3: 0.5 h / 0 - 20 °C
23.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
23.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 24 steps
1.1: potassium carbonate / methanol / 7.5 h / 0 °C
2.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
3.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
4.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
5.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
6.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
7.1: triethylamine / dichloromethane / 1.5 h / 0 °C
8.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
9.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
9.2: (+)-CSA / 0.33 h / 50 °C
10.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
11.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
11.2: 0.5 h / 20 °C / Inert atmosphere
12.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
13.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
14.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
14.2: 1.5 h
15.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
15.2: 1.5 h
16.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
17.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
18.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
19.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
20.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
20.2: 0.33 h / -20 °C / Inert atmosphere
21.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
22.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
23.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
23.2: 0.42 h / 150 °C
23.3: 0.5 h / 0 - 20 °C
24.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
24.2: 0.58 h / 0 °C
View Scheme
C19H22O5Se

C19H22O5Se

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 22 steps
1.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
2.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
3.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
4.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
5.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
6.1: triethylamine / dichloromethane / 1.5 h / 0 °C
7.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
8.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
8.2: (+)-CSA / 0.33 h / 50 °C
9.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
10.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
10.2: 0.5 h / 20 °C / Inert atmosphere
11.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
12.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
13.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
13.2: 1.5 h
14.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
15.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
16.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
17.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
18.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
18.2: 0.33 h / -20 °C / Inert atmosphere
19.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
20.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
21.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
21.2: 0.42 h / 150 °C
21.3: 0.5 h / 0 - 20 °C
22.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
22.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 23 steps
1.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
2.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
3.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
4.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
5.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
6.1: triethylamine / dichloromethane / 1.5 h / 0 °C
7.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
8.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
8.2: (+)-CSA / 0.33 h / 50 °C
9.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
10.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
10.2: 0.5 h / 20 °C / Inert atmosphere
11.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
12.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
13.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
13.2: 1.5 h
14.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
14.2: 1.5 h
15.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
16.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
17.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
18.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
19.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
19.2: 0.33 h / -20 °C / Inert atmosphere
20.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
21.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
22.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
22.2: 0.42 h / 150 °C
22.3: 0.5 h / 0 - 20 °C
23.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
23.2: 0.58 h / 0 °C
View Scheme
C19H20O5Se

C19H20O5Se

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 21 steps
1.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
2.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
3.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
4.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
5.1: triethylamine / dichloromethane / 1.5 h / 0 °C
6.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
7.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
7.2: (+)-CSA / 0.33 h / 50 °C
8.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
9.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
9.2: 0.5 h / 20 °C / Inert atmosphere
10.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
11.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
12.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
12.2: 1.5 h
13.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
14.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
15.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
16.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
17.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
17.2: 0.33 h / -20 °C / Inert atmosphere
18.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
19.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
20.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
20.2: 0.42 h / 150 °C
20.3: 0.5 h / 0 - 20 °C
21.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
21.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 22 steps
1.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
2.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
3.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
4.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
5.1: triethylamine / dichloromethane / 1.5 h / 0 °C
6.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
7.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
7.2: (+)-CSA / 0.33 h / 50 °C
8.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
9.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
9.2: 0.5 h / 20 °C / Inert atmosphere
10.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
11.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
12.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
12.2: 1.5 h
13.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
13.2: 1.5 h
14.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
15.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
16.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
17.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
18.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
18.2: 0.33 h / -20 °C / Inert atmosphere
19.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
20.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
21.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
21.2: 0.42 h / 150 °C
21.3: 0.5 h / 0 - 20 °C
22.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
22.2: 0.58 h / 0 °C
View Scheme
C19H22O5Se

C19H22O5Se

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 20 steps
1.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
2.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
3.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
4.1: triethylamine / dichloromethane / 1.5 h / 0 °C
5.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
6.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
6.2: (+)-CSA / 0.33 h / 50 °C
7.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
8.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
8.2: 0.5 h / 20 °C / Inert atmosphere
9.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
10.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
11.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
11.2: 1.5 h
12.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
13.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
14.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
15.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
16.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
16.2: 0.33 h / -20 °C / Inert atmosphere
17.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
18.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
19.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
19.2: 0.42 h / 150 °C
19.3: 0.5 h / 0 - 20 °C
20.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
20.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 21 steps
1.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
2.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
3.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
4.1: triethylamine / dichloromethane / 1.5 h / 0 °C
5.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
6.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
6.2: (+)-CSA / 0.33 h / 50 °C
7.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
8.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
8.2: 0.5 h / 20 °C / Inert atmosphere
9.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
10.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
11.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
11.2: 1.5 h
12.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
12.2: 1.5 h
13.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
14.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
15.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
16.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
17.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
17.2: 0.33 h / -20 °C / Inert atmosphere
18.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
19.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
20.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
20.2: 0.42 h / 150 °C
20.3: 0.5 h / 0 - 20 °C
21.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
21.2: 0.58 h / 0 °C
View Scheme
C22H30O5SeSi

C22H30O5SeSi

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 19 steps
1.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
2.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
3.1: triethylamine / dichloromethane / 1.5 h / 0 °C
4.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
5.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
5.2: (+)-CSA / 0.33 h / 50 °C
6.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
7.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
7.2: 0.5 h / 20 °C / Inert atmosphere
8.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
9.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
10.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
10.2: 1.5 h
11.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
12.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
13.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
14.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
15.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
15.2: 0.33 h / -20 °C / Inert atmosphere
16.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
17.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
18.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
18.2: 0.42 h / 150 °C
18.3: 0.5 h / 0 - 20 °C
19.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
19.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 20 steps
1.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
2.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
3.1: triethylamine / dichloromethane / 1.5 h / 0 °C
4.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
5.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
5.2: (+)-CSA / 0.33 h / 50 °C
6.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
7.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
7.2: 0.5 h / 20 °C / Inert atmosphere
8.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
9.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
10.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
10.2: 1.5 h
11.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
11.2: 1.5 h
12.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
13.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
14.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
15.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
16.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
16.2: 0.33 h / -20 °C / Inert atmosphere
17.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
18.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
19.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
19.2: 0.42 h / 150 °C
19.3: 0.5 h / 0 - 20 °C
20.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
20.2: 0.58 h / 0 °C
View Scheme
C46H70O7Si3

C46H70O7Si3

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 18 steps
1.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
2.1: triethylamine / dichloromethane / 1.5 h / 0 °C
3.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
4.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
4.2: (+)-CSA / 0.33 h / 50 °C
5.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
6.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
6.2: 0.5 h / 20 °C / Inert atmosphere
7.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
8.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
9.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
9.2: 1.5 h
10.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
11.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
12.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
13.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
14.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
14.2: 0.33 h / -20 °C / Inert atmosphere
15.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
16.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
17.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
17.2: 0.42 h / 150 °C
17.3: 0.5 h / 0 - 20 °C
18.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
18.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 19 steps
1.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
2.1: triethylamine / dichloromethane / 1.5 h / 0 °C
3.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
4.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
4.2: (+)-CSA / 0.33 h / 50 °C
5.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
6.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
6.2: 0.5 h / 20 °C / Inert atmosphere
7.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
8.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
9.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
9.2: 1.5 h
10.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
10.2: 1.5 h
11.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
12.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
13.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
14.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
15.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
15.2: 0.33 h / -20 °C / Inert atmosphere
16.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
17.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
18.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
18.2: 0.42 h / 150 °C
18.3: 0.5 h / 0 - 20 °C
19.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
19.2: 0.58 h / 0 °C
View Scheme
C40H54O6Si2

C40H54O6Si2

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 17 steps
1.1: triethylamine / dichloromethane / 1.5 h / 0 °C
2.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
3.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
3.2: (+)-CSA / 0.33 h / 50 °C
4.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
5.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
5.2: 0.5 h / 20 °C / Inert atmosphere
6.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
7.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
8.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
8.2: 1.5 h
9.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
10.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
11.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
12.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
13.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
13.2: 0.33 h / -20 °C / Inert atmosphere
14.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
15.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
16.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
16.2: 0.42 h / 150 °C
16.3: 0.5 h / 0 - 20 °C
17.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
17.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 18 steps
1.1: triethylamine / dichloromethane / 1.5 h / 0 °C
2.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
3.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
3.2: (+)-CSA / 0.33 h / 50 °C
4.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
5.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
5.2: 0.5 h / 20 °C / Inert atmosphere
6.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
7.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
8.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
8.2: 1.5 h
9.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
9.2: 1.5 h
10.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
11.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
12.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
13.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
14.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
14.2: 0.33 h / -20 °C / Inert atmosphere
15.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
16.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
17.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
17.2: 0.42 h / 150 °C
17.3: 0.5 h / 0 - 20 °C
18.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
18.2: 0.58 h / 0 °C
View Scheme
C46H68O6Si3

C46H68O6Si3

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 16 steps
1.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
2.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
2.2: (+)-CSA / 0.33 h / 50 °C
3.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
4.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
4.2: 0.5 h / 20 °C / Inert atmosphere
5.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
6.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
7.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
7.2: 1.5 h
8.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
9.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
10.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
11.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
12.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
12.2: 0.33 h / -20 °C / Inert atmosphere
13.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
14.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
15.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
15.2: 0.42 h / 150 °C
15.3: 0.5 h / 0 - 20 °C
16.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
16.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 17 steps
1.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
2.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
2.2: (+)-CSA / 0.33 h / 50 °C
3.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
4.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
4.2: 0.5 h / 20 °C / Inert atmosphere
5.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
6.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
7.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
7.2: 1.5 h
8.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
8.2: 1.5 h
9.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
10.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
11.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
12.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
13.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
13.2: 0.33 h / -20 °C / Inert atmosphere
14.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
15.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
16.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
16.2: 0.42 h / 150 °C
16.3: 0.5 h / 0 - 20 °C
17.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
17.2: 0.58 h / 0 °C
View Scheme
C40H54O7Si2

C40H54O7Si2

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 15 steps
1.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
1.2: (+)-CSA / 0.33 h / 50 °C
2.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
3.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
3.2: 0.5 h / 20 °C / Inert atmosphere
4.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
5.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
6.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
6.2: 1.5 h
7.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
8.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
9.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
10.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
11.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
11.2: 0.33 h / -20 °C / Inert atmosphere
12.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
13.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
14.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
14.2: 0.42 h / 150 °C
14.3: 0.5 h / 0 - 20 °C
15.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
15.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 16 steps
1.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
1.2: (+)-CSA / 0.33 h / 50 °C
2.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
3.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
3.2: 0.5 h / 20 °C / Inert atmosphere
4.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
5.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
6.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
6.2: 1.5 h
7.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
7.2: 1.5 h
8.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
9.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
10.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
11.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
12.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
12.2: 0.33 h / -20 °C / Inert atmosphere
13.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
14.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
15.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
15.2: 0.42 h / 150 °C
15.3: 0.5 h / 0 - 20 °C
16.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
16.2: 0.58 h / 0 °C
View Scheme
C44H60O8Si2

C44H60O8Si2

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 14 steps
1.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
2.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
2.2: 0.5 h / 20 °C / Inert atmosphere
3.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
4.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
5.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
5.2: 1.5 h
6.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
7.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
8.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
9.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
10.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
10.2: 0.33 h / -20 °C / Inert atmosphere
11.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
12.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
13.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
13.2: 0.42 h / 150 °C
13.3: 0.5 h / 0 - 20 °C
14.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
14.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 15 steps
1.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
2.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
2.2: 0.5 h / 20 °C / Inert atmosphere
3.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
4.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
5.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
5.2: 1.5 h
6.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
6.2: 1.5 h
7.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
8.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
9.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
10.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
11.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
11.2: 0.33 h / -20 °C / Inert atmosphere
12.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
13.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
14.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
14.2: 0.42 h / 150 °C
14.3: 0.5 h / 0 - 20 °C
15.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
15.2: 0.58 h / 0 °C
View Scheme
C25H34O8

C25H34O8

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 13 steps
1.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
1.2: 0.5 h / 20 °C / Inert atmosphere
2.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
3.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
4.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
4.2: 1.5 h
5.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
6.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
7.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
8.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
9.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
9.2: 0.33 h / -20 °C / Inert atmosphere
10.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
11.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
12.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
12.2: 0.42 h / 150 °C
12.3: 0.5 h / 0 - 20 °C
13.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
13.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 14 steps
1.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
1.2: 0.5 h / 20 °C / Inert atmosphere
2.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
3.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
4.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
4.2: 1.5 h
5.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
5.2: 1.5 h
6.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
7.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
8.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
9.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
10.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
10.2: 0.33 h / -20 °C / Inert atmosphere
11.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
12.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
13.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
13.2: 0.42 h / 150 °C
13.3: 0.5 h / 0 - 20 °C
14.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
14.2: 0.58 h / 0 °C
View Scheme
C29H38O8S4

C29H38O8S4

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 12 steps
1.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
2.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
3.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
3.2: 1.5 h
4.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
5.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
6.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
7.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
8.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
8.2: 0.33 h / -20 °C / Inert atmosphere
9.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
10.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
11.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
11.2: 0.42 h / 150 °C
11.3: 0.5 h / 0 - 20 °C
12.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
12.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 13 steps
1.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
2.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
3.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
3.2: 1.5 h
4.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
4.2: 1.5 h
5.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
6.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
7.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
8.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
9.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
9.2: 0.33 h / -20 °C / Inert atmosphere
10.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
11.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
12.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
12.2: 0.42 h / 150 °C
12.3: 0.5 h / 0 - 20 °C
13.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
13.2: 0.58 h / 0 °C
View Scheme
C25H32O6

C25H32O6

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 10 steps
1.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
1.2: 1.5 h
2.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
3.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
4.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
5.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
6.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
6.2: 0.33 h / -20 °C / Inert atmosphere
7.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
8.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
9.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
9.2: 0.42 h / 150 °C
9.3: 0.5 h / 0 - 20 °C
10.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
10.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 11 steps
1.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
1.2: 1.5 h
2.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
2.2: 1.5 h
3.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
4.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
5.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
6.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
7.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
7.2: 0.33 h / -20 °C / Inert atmosphere
8.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
9.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
10.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
10.2: 0.42 h / 150 °C
10.3: 0.5 h / 0 - 20 °C
11.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
11.2: 0.58 h / 0 °C
View Scheme
C12H20O4

C12H20O4

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 37 steps
1.1: p-benzoquinone; Hoveyda-Grubbs catalyst second generation / 1,2-dichloro-ethane / 9 h / 80 °C / Inert atmosphere
2.1: hydrogen; palladium 10% on activated carbon / hexane; ethyl acetate / 0.5 h / 0 °C / 760.05 Torr
3.1: tert.-butyl lithium / tetrahydrofuran; pentane / 0.17 h / -78 - 0 °C / Inert atmosphere
3.2: 0.17 h / -78 - 0 °C / Inert atmosphere
4.1: 4-methylmorpholine N-oxide; tetra-n-propylammonium perruthenate. / dichloromethane / 0.75 h / 20 °C / Molecular sieve; Inert atmosphere
5.1: tert.-butyl lithium / tetrahydrofuran; pentane / 15 h / -78 °C / Inert atmosphere
5.2: 0.17 h / -78 °C / Inert atmosphere
5.3: 2 h / -78 - -45 °C / Inert atmosphere
6.1: Dowex 50W / tetrahydrofuran; water / 12 h / 90 °C
7.1: pyridine / dichloromethane / 1 h / 0 - 20 °C
8.1: (+)-CSA / benzene / 2 h / 20 °C / Inert atmosphere
9.1: triethylamine / dichloromethane / 0.75 h / 20 °C / Inert atmosphere
10.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
10.2: 0.42 h
11.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
12.1: triethylamine / dichloromethane / 1.25 h / 0 °C
13.1: dmap / toluene / 1.5 h / 20 °C / Darkness
14.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
15.1: potassium carbonate / methanol / 7.5 h / 0 °C
16.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
17.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
18.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
19.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
20.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
21.1: triethylamine / dichloromethane / 1.5 h / 0 °C
22.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
23.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
23.2: (+)-CSA / 0.33 h / 50 °C
24.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
25.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
25.2: 0.5 h / 20 °C / Inert atmosphere
26.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
27.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
28.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
28.2: 1.5 h
29.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
30.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
31.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
32.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
33.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
33.2: 0.33 h / -20 °C / Inert atmosphere
34.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
35.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
36.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
36.2: 0.42 h / 150 °C
36.3: 0.5 h / 0 - 20 °C
37.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
37.2: 0.58 h / 0 °C
View Scheme
Multi-step reaction with 38 steps
1.1: p-benzoquinone; Hoveyda-Grubbs catalyst second generation / 1,2-dichloro-ethane / 9 h / 80 °C / Inert atmosphere
2.1: hydrogen; palladium 10% on activated carbon / hexane; ethyl acetate / 0.5 h / 0 °C / 760.05 Torr
3.1: tert.-butyl lithium / tetrahydrofuran; pentane / 0.17 h / -78 - 0 °C / Inert atmosphere
3.2: 0.17 h / -78 - 0 °C / Inert atmosphere
4.1: 4-methylmorpholine N-oxide; tetra-n-propylammonium perruthenate. / dichloromethane / 0.75 h / 20 °C / Molecular sieve; Inert atmosphere
5.1: tert.-butyl lithium / tetrahydrofuran; pentane / 15 h / -78 °C / Inert atmosphere
5.2: 0.17 h / -78 °C / Inert atmosphere
5.3: 2 h / -78 - -45 °C / Inert atmosphere
6.1: Dowex 50W / tetrahydrofuran; water / 12 h / 90 °C
7.1: pyridine / dichloromethane / 1 h / 0 - 20 °C
8.1: (+)-CSA / benzene / 2 h / 20 °C / Inert atmosphere
9.1: triethylamine / dichloromethane / 0.75 h / 20 °C / Inert atmosphere
10.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 0 °C
10.2: 0.42 h
11.1: lead(IV) tetraacetate; potassium carbonate / toluene / 1.17 h / 0 - 20 °C
12.1: triethylamine / dichloromethane / 1.25 h / 0 °C
13.1: dmap / toluene / 1.5 h / 20 °C / Darkness
14.1: sodium hydrogencarbonate / toluene / 0.5 h / 20 °C / Irradiation
15.1: potassium carbonate / methanol / 7.5 h / 0 °C
16.1: acetic anhydride; dimethyl sulfoxide / 2 h / 35 °C
17.1: cerium(III) chloride heptahydrate; sodium tetrahydroborate / methanol / 0.17 h / -78 °C
18.1: 2,6-dimethylpyridine / water; dichloromethane / 0.5 h / 0 °C
19.1: 1,1'-azobis(1-cyanocyclohexanenitrile) / chlorobenzene / 0.5 h / Reflux; Inert atmosphere
20.1: sodium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
21.1: triethylamine / dichloromethane / 1.5 h / 0 °C
22.1: sodium hydrogencarbonate; 3-chloro-benzenecarboperoxoic acid / hexane; dichloromethane / 0.5 h / 0 °C
23.1: diisobutylaluminium hydride / hexane; dichloromethane / 1 h / -93 °C / Inert atmosphere
23.2: (+)-CSA / 0.33 h / 50 °C
24.1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 20 °C
25.1: sodium hydride / tetrahydrofuran; mineral oil / 0.17 h / 0 °C / Inert atmosphere
25.2: 0.5 h / 20 °C / Inert atmosphere
26.1: 5,5-dimethyl-1,3-cyclohexadiene / 1.5 h / 110 °C / Inert atmosphere
27.1: tri-n-butyl-tin hydride; 1,1'-azobis(1-cyanocyclohexanenitrile) / 5,5-dimethyl-1,3-cyclohexadiene / 0.17 h / 180 °C / Inert atmosphere; Microwave irradiation
28.1: hydrogenchloride / water; methanol / 3.5 h / 30 °C
28.2: 1.5 h
29.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
29.2: 1.5 h
30.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
31.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
32.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
33.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
34.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
34.2: 0.33 h / -20 °C / Inert atmosphere
35.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
36.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
37.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
37.2: 0.42 h / 150 °C
37.3: 0.5 h / 0 - 20 °C
38.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
38.2: 0.58 h / 0 °C
View Scheme
C19H28O5

C19H28O5

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 9 steps
1.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
2.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
3.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
4.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
5.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
5.2: 0.33 h / -20 °C / Inert atmosphere
6.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
7.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
8.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
8.2: 0.42 h / 150 °C
8.3: 0.5 h / 0 - 20 °C
9.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
9.2: 0.58 h / 0 °C
View Scheme
C21H28O5

C21H28O5

resiniferatoxin
57444-62-9

resiniferatoxin

Conditions
ConditionsYield
Multi-step reaction with 10 steps
1.1: hydrogenchloride / methanol; water / 3.5 h / 30 °C
1.2: 1.5 h
2.1: dmap; 2-azatricyclo[3.3.1.13,7]dec-2-yloxidanyl; [2,2]bipyridinyl; copper(l) chloride / acetonitrile / 0.5 h / 0 °C
3.1: dmap / tetrahydrofuran; toluene / 2 h / 0 °C
4.1: 2,6-dimethylpyridine / dichloromethane / 0.25 h / 20 °C
5.1: L-Selectride / tetrahydrofuran / 0.42 h / -78 °C / Inert atmosphere
6.1: lithium hexamethyldisilazane / tetrahydrofuran / 0.5 h / -78 - 0 °C / Inert atmosphere
6.2: 0.33 h / -20 °C / Inert atmosphere
7.1: dmap; 1,4-diaza-bicyclo[2.2.2]octane / acetonitrile / 76 h / 110 °C
8.1: N-Bromosuccinimide / tetrahydrofuran / 0.83 h / 0 °C
9.1: selenium(IV) oxide / tert-butyl alcohol / 80 °C
9.2: 0.42 h / 150 °C
9.3: 0.5 h / 0 - 20 °C
10.1: caesium carbonate / N,N-dimethyl-formamide / 5.67 h / 20 °C
10.2: 0.58 h / 0 °C
View Scheme
resiniferatoxin
57444-62-9

resiniferatoxin

9,13,14-orthophenylacetyl-3β-hydroxyresiniferonyl 20-(4-hydroxy-3-methoxyphenylacetate)

9,13,14-orthophenylacetyl-3β-hydroxyresiniferonyl 20-(4-hydroxy-3-methoxyphenylacetate)

Conditions
ConditionsYield
With sodium tetrahydroborate In ethanol for 2h;60%
resiniferatoxin
57444-62-9

resiniferatoxin

Resininiferonol-9-13-14-ortho-phenyl acetate

Resininiferonol-9-13-14-ortho-phenyl acetate

Conditions
ConditionsYield
With sodium methylate In methanol

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