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Nanjing Spring & Autumn Biological Engineering Co., Ltd.

Nanjing Spring & Autumn Biological Engineering Co., Ltd. Which was founded at 2008, has an R & D team composed very experienced natural products chemists. The company is a high-tech enterprise engaged in functional health care products raw ma

High Purity Betulonicacid Powder CAS 4481-62-3 with Safe Delivery

Cas:4481-62-3

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe

Betulonic acid

Cas:4481-62-3

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

Large Stock 99.0% 3-oxolup-20(29)-en-28-oic acid 4481-62-3 Producer

Cas:4481-62-3

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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Shanghai Seasonsgreen Chemical Co.,Ltd

Shanghai Seasonsgreen Chemical is a high-tech research and development, production, sale and custom synthesis set in one high-tech chemical products enterprises. Our sales and marketing division is located in Shanghai, serving international pharmaceu

lower price High quality Betulonicacid

Cas:4481-62-3

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Manufacturers

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Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥99% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1) Parcel can

Betulonic Acid CAS 4481-62-3 98% HPLC Nmr COA Factory Shop

Cas:4481-62-3

Min.Order:1 Kilogram

FOB Price: $1.0 / 12.0

Type:Trading Company

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Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 6 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O

Betulonicacid 4481-62-3

Cas:4481-62-3

Min.Order:1 Metric Ton

FOB Price: $500.0

Type:Lab/Research institutions

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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

Pharmaceutical Grade CAS 4481-62-3 with competitive price

Cas:4481-62-3

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

Betulonic acid 4481-62-3

Cas:4481-62-3

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

Betulonicacid CAS:4481-62-3 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 intermediate

Betulonicacid CAS:4481-62-3

Cas:4481-62-3

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Hanjiang Chemical Co., Ltd.

Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

Betulonic acid

Cas:4481-62-3

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Leader Biochemical Group

Overview of Our Factories Our Factories production lines Our Factories R&D ability Our Factories warehouse Our Factorie

China Biggest Factory & Manufacturer supply Betulonic acid

Cas:4481-62-3

Min.Order:10 Milligram

FOB Price: $30.0 / 35.0

Type:Lab/Research institutions

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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

Betulonic acid

Cas:4481-62-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Chengdu Biopurify Phytochemicals Ltd.

Chengdu Biopurify Phytochemicals Ltd. is a leading company in the research, development, manufacture and marketing of High Quality Phytochemicals and Extracts(especially Active Ingredients from Traditional Chinese Medicine,Traditional Chinese Medic

Liquidambaric acid;Betulonic acid

Cas:4481-62-3

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

Betulonic acid

Cas:4481-62-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

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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

Betulonicacid

Cas:4481-62-3

Min.Order:1 Gram

Negotiable

Type:Other

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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

Liquidambaric acid

Cas:4481-62-3

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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Xiamen Jenny Chemical Technology Co., Ltd.

GMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,

Betulonicacid

Cas:4481-62-3

Min.Order:1 Milligram

Negotiable

Type:Trading Company

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Hubei CuiRan Biotechnology Co., Ltd

Hubei CuiRan Biotechnology Co., Ltd is a leading company in the research, development, manufacture and marketing of High Quality Phytochemicals and Extracts(especially Active Ingredients from Traditional Chinese Medicine,Traditional Chinese Medicine)

Liquidambaric acid

Cas:4481-62-3

Min.Order:10 Milligram

Negotiable

Type:Lab/Research institutions

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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 custom synthe

SAGECHEM/Betulonic acid/Liquidambaric acid/SAGECHEM/Manufacturer in China

Cas:4481-62-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

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shanghai Tauto Biotech Co., Ltd

The quality is guaranteed. If you find the product is wrong compared with COA, we promise 100% refund or change product. COA and HPLC will be shipped out with goods. You can also inform your analysis method and we will follow your analysis me

E-1066 Liquidambaric acid

Cas:4481-62-3

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

inquiry

Greenutra Resource Inc

3-oxolup-20(29)-en-28-oic acidAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air

3-oxolup-20(29)-en-28-oic acid

Cas:4481-62-3

Min.Order:0

Negotiable

Type:Trading Company

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Kono Chem Co.,Ltd

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

3-oxolup-20(29)-en-28-oic acid

Cas:4481-62-3

Min.Order:0

Negotiable

Type:Other

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Wuxi TAA Chemical Industry Co.,LTD.

1.A strong technical force and advanced processing equipments. The quality of the products has been strictly inspected and all kinds of index have reached or exceeded domestic and international standards.2. Now we have established long-term stable re

Betulonicacid CAS 4481-62-3

Cas:4481-62-3

Min.Order:0

Negotiable

Type:Other

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Sinoway Industrial Co., Ltd.

Why is SINOWAY:1) Specialized in pharmaceutical and healthcare industrial since 19872) ISO 9001:2015 & SGS audited supplier . 3) Accept various payment terms : T.T 30-60 days.4) We have warehouse in USA with quickly shipment . Application:Herbal extr

Hangzhou Dingyan Chem Co., Ltd

high purity, manufacturer Application:Intermediate

Betulonic Acid

Cas:4481-62-3

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

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 Liquidambaric acid L46210 20mg

Cas:4481-62-3

Min.Order:1 bottle

Negotiable

Type:Lab/Research institutions

inquiry

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

LiquidaMbaric acid; Betulonic acid

Cas:4481-62-3

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Chengdu Lemeitian Pharmaceutical Technology Co,. Ltd

ADVANTAGE:1. More than 3,000 Chinese medicine reference substances / standard products available from stock, issued on the same day, multiple cities can be delivered the next day2. The products are provided with COA, HPLC, NMR, quality assurance, pac

Liquidambaric acid

Cas:4481-62-3

Min.Order:0

Negotiable

Type:Manufacturers

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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

Betulonic acid

Cas:4481-62-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Guangdong Juda Chemical Industrial Co.,Limited

Appearance:solid or liquid Storage:sealed in cool and dry place Package:As customer's requested Application:Pharma Intermediate Transportation:by courier/air/sea Port:Any port in China

Betulonicacid CAS No.4481-62-3

Cas:4481-62-3

Min.Order:0

Negotiable

Type:Trading Company

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Synthetic route

betulonic aldehyde
4439-98-9

betulonic aldehyde

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
With sodium chlorite; sodium dihydrogen phosphate monohydrate; 2-methyl-but-2-ene In water; tert-butyl alcohol at 20℃; for 2h; Inert atmosphere;100%
With sodium chlorite; sodium dihydrogen phosphate monohydrate; 2-methyl-but-2-ene In water; tert-butyl alcohol at 20℃; for 2h;100%
With sodium chlorite; sodium dihydrogen phosphate monohydrate; 2-methyl-but-2-ene In water; tert-butyl alcohol at 20℃; for 2h; Inert atmosphere;100%
cyclohexylammonium betulonate

cyclohexylammonium betulonate

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
With phosphoric acid In dichloromethane; water96%
Betulinic acid
472-15-1

Betulinic acid

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
With pyridinium chlorochromate In chloroform for 2h; Ambient temperature;93%
With Jones reagent In dichloromethane; acetone at 20℃; for 0.25h; Cooling;93%
With Jones reagent In dichloromethane; acetone at 20℃; Cooling;93%
betulin
473-98-3

betulin

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
Stage #1: betulin In acetone at 40℃; for 0.5h;
Stage #2: With Jones reagent at -10℃; for 4h; Solvent;
87.6%
With Jones reagent81.8%
With Jones reagent at 25℃; for 4h; Jones Oxidation;81%
betulin
473-98-3

betulin

A

betulonic aldehyde
4439-98-9

betulonic aldehyde

B

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
With Jones reagent In acetone at 0℃; for 2.25h;A 6%
B 86%
With Jones reagent In acetone at 0 - 20℃; for 3h; Inert atmosphere;A 6%
B 86%
With Jones reagent In acetone at 0 - 20℃; Inert atmosphere;A n/a
B 57%
betulin
473-98-3

betulin

A

betulonic aldehyde
4439-98-9

betulonic aldehyde

B

betulinic aldehyde
13159-28-9, 92594-07-5

betulinic aldehyde

C

Betulinic acid
472-15-1

Betulinic acid

D

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
With dipyridinium dichromate In water; N,N-dimethyl-formamideA 20%
B 7%
C 8%
D 13%
betulin
473-98-3

betulin

acetic acid
64-19-7

acetic acid

CrO3

CrO3

A

betulonic aldehyde
4439-98-9

betulonic aldehyde

B

betulonic acid
4481-62-3

betulonic acid

C

acid C30H46O3

acid C30H46O3

Conditions
ConditionsYield
at 2℃;
pyridine
110-86-1

pyridine

betulonic aldehyde
4439-98-9

betulonic aldehyde

KMnO4

KMnO4

betulonic acid
4481-62-3

betulonic acid

betulone
7020-34-0

betulone

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
With sodium chlorite; sodium dihydrogenphosphate; dihydrogen peroxide In water; acetonitrile at 20℃;347 mg
With Jones reagent
betulin diacetate
1721-69-3

betulin diacetate

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: NaOH / methanol; tetrahydrofuran / 168000 h / 20 °C
2: 4.8 g / Jones reagent / acetone / 7 h / 0 °C
View Scheme
betulonic aldehyde
4439-98-9

betulonic aldehyde

betulinic aldehyde
13159-28-9, 92594-07-5

betulinic aldehyde

A

Betulinic acid
472-15-1

Betulinic acid

B

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic aldehyde; betulinic aldehyde With sodium chlorite; sodium dihydrogenphosphate; 2-methyl-but-2-ene In water; tert-butyl alcohol at 20℃; for 18.5h; Inert atmosphere;
Stage #2: With sodium hydroxide In water; tert-butyl alcohol at 20℃; for 1.5h;
Stage #3: With hydrogenchloride In water for 2.5h; Overall yield = 17.8 g;
(1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13bR)-3a-(hydroxymethyl)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)icosahydro-1H-cyclopenta[a]chrysen-9-ol
1072913-62-2

(1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13bR)-3a-(hydroxymethyl)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)icosahydro-1H-cyclopenta[a]chrysen-9-ol

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: triethylamine; oxalyl dichloride; dimethyl sulfoxide / dichloromethane / 0.42 h / -15 °C / Inert atmosphere
2: 2-methyl-but-2-ene; sodium chlorite; sodium dihydrogen phosphate monohydrate / water; tert-butyl alcohol / 2 h / 20 °C / Inert atmosphere
View Scheme
betulonic aldehyde
4439-98-9

betulonic aldehyde

A

28-norlup-20(29)-en-3-one-17β-hydroperoxide

28-norlup-20(29)-en-3-one-17β-hydroperoxide

B

28-norlup-20(29)-en-3-one-17α-hydroperoxide

28-norlup-20(29)-en-3-one-17α-hydroperoxide

C

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
With air In acetone at 20℃; for 336h;A 57.7 mg
B 32.9 mg
C 176.4 mg
betulin
473-98-3

betulin

A

betulonic aldehyde
4439-98-9

betulonic aldehyde

B

betulinic aldehyde
13159-28-9, 92594-07-5

betulinic aldehyde

C

betulonic acid
4481-62-3

betulonic acid

Conditions
ConditionsYield
With Ru/C; air In 1,3,5-trimethyl-benzene at 140℃; for 6h; Overall yield = 48 %;
betulonic acid
4481-62-3

betulonic acid

betulonic acid chloride
150841-01-3

betulonic acid chloride

Conditions
ConditionsYield
With oxalyl dichloride In dichloromethane at 20℃; for 6h; Inert atmosphere;99%
With oxalyl dichloride In benzene95%
With oxalyl dichloride In dichloromethane at 20℃; for 6h;89%
betulonic acid
4481-62-3

betulonic acid

methyl betulonate
4356-31-4

methyl betulonate

Conditions
ConditionsYield
In diethyl ether98%
With diethyl ether
Esterification;
betulonic acid
4481-62-3

betulonic acid

3-oxolupan-28-ic acid
25576-27-6

3-oxolupan-28-ic acid

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen In tetrahydrofuran; methanol at 20℃; for 22h;98%
With palladium 10% on activated carbon; hydrogen In tetrahydrofuran; methanol at 23℃; under 760.051 Torr; for 12h;94%
With palladium on activated charcoal; hydrogen In tetrahydrofuran; methanol at 20℃;94%
betulonic acid
4481-62-3

betulonic acid

methyl iodide
74-88-4

methyl iodide

methyl betulonate
4356-31-4

methyl betulonate

Conditions
ConditionsYield
With potassium carbonate In acetone at 20℃;98%
With potassium carbonate In acetone at 25℃; for 24h;94%
With potassium carbonate In N,N-dimethyl-formamide at 23 - 40℃; for 5h; Inert atmosphere;90%
betulonic acid
4481-62-3

betulonic acid

2-hydroxy-3-oxo-lupa-1,20(29)-dien-28-oic acid
173106-22-4

2-hydroxy-3-oxo-lupa-1,20(29)-dien-28-oic acid

Conditions
ConditionsYield
With potassium tert-butylate In tetrahydrofuran; tert-butyl alcohol at 50℃; for 3h;97%
With potassium tert-butylate; oxygen In tert-butyl alcohol at 400℃; for 0.666667h;82%
With air; potassium tert-butylate In tert-butyl alcohol at 40℃; for 0.666667h;75%
betulonic acid
4481-62-3

betulonic acid

Betulinic acid
472-15-1

Betulinic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With aluminum isopropoxide; benzyl alcohol In tetrahydrofuran at 65℃; for 2h;
Stage #2: With sodium hydroxide In water; xylene at 130℃; for 1h;
Stage #3: With acetic acid In water Conversion of starting material;
96.3%
Stage #1: betulonic acid With aluminum isopropoxide; benzyl alcohol In tetrahydrofuran at 65℃; for 2h; Heating / reflux;
Stage #2: With sodium hydroxide; water In xylenes at 130℃; for 1h;
Stage #3: With acetic acid In water
96.3%
With sodium tetrahydroborate; isopropyl alcohol; sodium hydroxide In water for 3h;94%
betulonic acid
4481-62-3

betulonic acid

propargyl bromide
106-96-7

propargyl bromide

C28-propargylbetulonate

C28-propargylbetulonate

Conditions
ConditionsYield
With potassium carbonate In acetone at 50℃;96%
With potassium carbonate; potassium iodide at 20℃;82%
With potassium carbonate In acetone for 6h; Reflux;74%
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 1h;
betulonic acid
4481-62-3

betulonic acid

3-Oxo-18α-oleanan-28<*>19β-olide
24099-81-8

3-Oxo-18α-oleanan-28<*>19β-olide

Conditions
ConditionsYield
With sodium carbonate; trifluoroacetic acid In chloroform for 0.133333h;95%
With toluene-4-sulfonic acid In chloroform; water for 3h; Reflux;19%
With formic acid at 100℃;
With formic acid
betulonic acid
4481-62-3

betulonic acid

mercaptoacetic acid
68-11-1

mercaptoacetic acid

3,3-bis[(carboxymethyl)thio]lup-20(29)-en-28-oic acid

3,3-bis[(carboxymethyl)thio]lup-20(29)-en-28-oic acid

Conditions
ConditionsYield
In chloroform at 20℃; for 48h; Dean-Stark;95%
betulonic acid
4481-62-3

betulonic acid

(1R,3aS,5aR,5bR,11aR,E)-9-(hydroxyimino)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)icosahydro-1H-cyclopenta[a]chrysene-3a-carboxylic acid

(1R,3aS,5aR,5bR,11aR,E)-9-(hydroxyimino)-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)icosahydro-1H-cyclopenta[a]chrysene-3a-carboxylic acid

Conditions
ConditionsYield
With pyridine; hydroxylamine hydrochloride at 120℃; for 4h; Microwave irradiation;94%
With pyridine; hydroxylamine hydrochloride In ethanol for 72h; Inert atmosphere;87%
With hydroxylamine; sodium acetate In ethanol
betulonic acid
4481-62-3

betulonic acid

3-nitro-benzaldehyde
99-61-6

3-nitro-benzaldehyde

2-(3-nitrobenzylidene)betulonic acid

2-(3-nitrobenzylidene)betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: 3-nitro-benzaldehyde In tetrahydrofuran at 0 - 20℃; for 1.5h;
93%
betulonic acid
4481-62-3

betulonic acid

4-nitrobenzaldehdye
555-16-8

4-nitrobenzaldehdye

2-(4-nitrobenzylidene)betulonic acid

2-(4-nitrobenzylidene)betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: 4-nitrobenzaldehdye In tetrahydrofuran at 0 - 20℃; for 1.5h;
93%
betulonic acid
4481-62-3

betulonic acid

(1R,3aS,5aR,5bR,7aR,11aR,11bR,13aR,13bR)-3a-isocyanato-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)octadecahydro-1H-cyclopenta[a]chrysen-9(5bH)-one
628308-21-4

(1R,3aS,5aR,5bR,7aR,11aR,11bR,13aR,13bR)-3a-isocyanato-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)octadecahydro-1H-cyclopenta[a]chrysen-9(5bH)-one

Conditions
ConditionsYield
With diphenyl phosphoryl azide; N-ethyl-N,N-diisopropylamine In 1,4-dioxane at 20 - 102℃; for 16.66h; Concentration; Reagent/catalyst; Temperature; Time; Inert atmosphere;92%
With diphenyl phosphoryl azide; triethylamine In 1,4-dioxane for 18.5h; Reflux;63.2%
With diphenyl phosphoryl azide; triethylamine In 1,4-dioxane for 18.5h; Reflux; Inert atmosphere;63.2%
Multi-step reaction with 2 steps
1: oxalyl chloride / benzene / 2 h / 20 - 22 °C
2: 0.38 g / NaN3 / acetone / 6 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: 95 percent / oxalyl chloride / benzene
2: NaN3 / acetone / 6 h / 20 - 22 °C
View Scheme
betulonic acid
4481-62-3

betulonic acid

2,6-dichlorobenzaldehyde
83-38-5

2,6-dichlorobenzaldehyde

2-(2,6-dichlorobenzylidene)betulonic acid

2-(2,6-dichlorobenzylidene)betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: 2,6-dichlorobenzaldehyde In tetrahydrofuran at 0 - 20℃; for 2h;
92%
5-bromo-2-furancarboxaldehyde
1899-24-7

5-bromo-2-furancarboxaldehyde

betulonic acid
4481-62-3

betulonic acid

2-{(5-bromofuran-2-yl)methylene}betulonic acid

2-{(5-bromofuran-2-yl)methylene}betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: 5-bromo-2-furancarboxaldehyde In tetrahydrofuran at 0 - 20℃; for 1.7h;
92%
betulonic acid
4481-62-3

betulonic acid

5-bromo-2-methoxybenzaldehyde
25016-01-7

5-bromo-2-methoxybenzaldehyde

2-(5-bromo-2-methoxybenzylidene)betulonic acid

2-(5-bromo-2-methoxybenzylidene)betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: 5-bromo-2-methoxybenzaldehyde In tetrahydrofuran at 0 - 20℃; for 2h;
92%
4-nitrophenyl azide
1516-60-5

4-nitrophenyl azide

betulonic acid
4481-62-3

betulonic acid

benzylamine
100-46-9

benzylamine

1′-benzyl-1H′-lup-2-eno-[2,3-d][1,2,3]-triazole-28-oic acid

1′-benzyl-1H′-lup-2-eno-[2,3-d][1,2,3]-triazole-28-oic acid

Conditions
ConditionsYield
In toluene at 100℃; for 24h; Molecular sieve;92%
3,5-dimethoxybenzylamine
34967-24-3

3,5-dimethoxybenzylamine

4-nitrophenyl azide
1516-60-5

4-nitrophenyl azide

betulonic acid
4481-62-3

betulonic acid

1′-(3,5-dimethoxybenzyl)-1H′-lup-2-eno-[2,3-d][1,2,3]-triazole-28-oic acid

1′-(3,5-dimethoxybenzyl)-1H′-lup-2-eno-[2,3-d][1,2,3]-triazole-28-oic acid

Conditions
ConditionsYield
In toluene at 100℃; for 24h; Molecular sieve;92%
betulonic acid
4481-62-3

betulonic acid

4-bromo-benzaldehyde
1122-91-4

4-bromo-benzaldehyde

2-(4-bromobenzylidene)betulonic acid

2-(4-bromobenzylidene)betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: 4-bromo-benzaldehyde In tetrahydrofuran at 0 - 20℃; for 2h;
91%
m-bromobenzoic aldehyde
3132-99-8

m-bromobenzoic aldehyde

betulonic acid
4481-62-3

betulonic acid

2-(3-bromobenzylidene)betulonic acid

2-(3-bromobenzylidene)betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: m-bromobenzoic aldehyde In tetrahydrofuran at 0 - 20℃; for 1.5h;
91%
betulonic acid
4481-62-3

betulonic acid

ortho-bromobenzaldehyde
6630-33-7

ortho-bromobenzaldehyde

2-(2-bromobenzylidene)betulonic acid

2-(2-bromobenzylidene)betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: ortho-bromobenzaldehyde In tetrahydrofuran at 0 - 20℃; for 2h;
91%
betulonic acid
4481-62-3

betulonic acid

1-naphthaldehyde
66-77-3

1-naphthaldehyde

2-(naphthalene-1-ylmethylene)betulonic acid

2-(naphthalene-1-ylmethylene)betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: 1-naphthaldehyde In tetrahydrofuran at 0 - 20℃; for 2h;
91%
betulonic acid
4481-62-3

betulonic acid

3-(hydroxyimino)lup-20(29)-en-28-oic acid
38301-42-7

3-(hydroxyimino)lup-20(29)-en-28-oic acid

Conditions
ConditionsYield
With hydroxylamine hydrochloride In pyridine for 2h; Heating;90%
With pyridine; hydroxylamine hydrochloride In methanol for 16h; Reflux;84%
With pyridine; hydroxylamine hydrochloride at 20℃;72.4%
betulonic acid
4481-62-3

betulonic acid

benzyl chloride
100-44-7

benzyl chloride

benzyl (1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-9-oxo-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)icosahydro-3aH-cyclopenta[a]chrysene-3a-carboxylate
203576-71-0

benzyl (1R,3aS,5aR,5bR,7aR,9S,11aR,11bR,13aR,13bR)-9-oxo-5a,5b,8,8,11a-pentamethyl-1-(prop-1-en-2-yl)icosahydro-3aH-cyclopenta[a]chrysene-3a-carboxylate

Conditions
ConditionsYield
With potassium carbonate for 2h; Reflux;90%
3-thiophene carboxaldehyde
498-62-4

3-thiophene carboxaldehyde

betulonic acid
4481-62-3

betulonic acid

2-(thiophen-3-ylmethylene)betulonic acid

2-(thiophen-3-ylmethylene)betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: 3-thiophene carboxaldehyde In tetrahydrofuran at 0 - 20℃; for 1h;
90%
3-pyridinecarboxaldehyde
500-22-1

3-pyridinecarboxaldehyde

betulonic acid
4481-62-3

betulonic acid

2-(pyridin-3-ylmethylene)betulonic acid

2-(pyridin-3-ylmethylene)betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: 3-pyridinecarboxaldehyde In tetrahydrofuran at 0 - 20℃; for 2h;
90%
betulonic acid
4481-62-3

betulonic acid

3-bromo-4-fluorobenzaldehyde
77771-02-9

3-bromo-4-fluorobenzaldehyde

2-(3-bromo-4-fluorobenzylidene)betulonic acid

2-(3-bromo-4-fluorobenzylidene)betulonic acid

Conditions
ConditionsYield
Stage #1: betulonic acid With sodium hydride In tetrahydrofuran at 0℃; for 0.166667h;
Stage #2: 3-bromo-4-fluorobenzaldehyde In tetrahydrofuran at 0 - 20℃; for 1.5h;
90%

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