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shanghai Tauto Biotech Co., Ltd

17-year experience in Phytochemicals Each product has passed very strict tests (NMR\MS\HPLC) Agents in 13 countries Certified by ISO 9001:2008 quality management system Leader Supplier of Botanical Reference Materials in China

E-0008 Ginkgolide B

Cas:15291-77-7

Min.Order:10 Milligram

Negotiable

Type:Manufacturers

inquiry

Guangdong Juda Chemical Industrial Co.,Limited

1.Free sample(10-20g or enough to detection) and Unconditional assume respons 2.100% Natural porduct, without any synthetize ingredient 3.Manufacturer direct supply, provide OEM, R&D service 4.ISO/HACCP/KOSHER/GMP/FDA 5.Leading plant ex

CAS No.15291-77-7 Ginkgolide B CAS NO.15291-77-7

Cas:15291-77-7

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Dayang Chem (Hangzhou) Co.,Ltd.

As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

Ginkgolide B Manufacturer/High quality/Best price/In stock

Cas:15291-77-7

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

inquiry

Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality Ginkgolide B supplier in China

Cas:15291-77-7

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

inquiry

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

High Content Natural Extract Ginkgolide B HACCP manufacturer

Cas:15291-77-7

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva

Ginkgolide B

Cas:15291-77-7

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

inquiry

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 15291-77-7 with competitive price

Cas:15291-77-7

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

Shanghai Upbio Tech Co.,Ltd

1.In No Less 10 years exporting experience. you 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 Specializ

Ginkgolide B

Cas:15291-77-7

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Leader Biochemical Group

PRODUCT DETAILS

China Biggest Factory Manufacturer Supply Ginkgolide B CAS 15291-77-7

Cas:15291-77-7

Min.Order:500 Kilogram

FOB Price: $1.0 / 2.0

Type:Lab/Research institutions

inquiry

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

Ginkgolide B

Cas:15291-77-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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

Ginkgolide B

Cas:15291-77-7

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

Ginkgolide B

Cas:15291-77-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Factory Supply ginkgolide B from ginkgo leaves

Cas:15291-77-7

Min.Order:0 Metric Ton

Negotiable

Type:Other

inquiry

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

Ginkgolide B

Cas:15291-77-7

Min.Order:10 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 5 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 o

CAS15291-77-7 Ginkgolide B

Cas:15291-77-7

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

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,

Ginkgolide B

Cas:15291-77-7

Min.Order:1 Milligram

Negotiable

Type:Trading Company

inquiry

Henan Kanbei Chemical Co.,LTD

High quality, competitive price, fast delivery and first-class service we possesses have won the trust and praise of customers. Standard: BP/USP/EP The purity is equal or greater than 99%. As a supplier, we can provide high-quality products. Cle

Ginkgolide B 99%

Cas:15291-77-7

Min.Order:1 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Huarong Pharm Co., Ltd.

Hangzhou Huarong Pharm Co., Ltd.established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World. Hu

Ginkgolide B

Cas:15291-77-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Xiamen Hisunny Chemical Co.,Ltd

Best quality & Attractive price & Professional service; Trial & Pilot & CommercialHisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, special chemicals and OLED

Ginkgolide B

Cas:15291-77-7

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

Ginkgolide B

Cas:15291-77-7

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

LIDE PHARMACEUTICALS LIMITED

LIDE PHARMACEUTICALS LIMITED is a professional leading manufacturer of chemicals and APIs in China. Our core business line covers APIs, Intermediates, Flavours and fragrances, Specialty chemicals, Dietary additives etc.We are specialized in chemical

Ginkgolide B

Cas:15291-77-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Wuhan Fortuna Chemical Co.,Ltd

product name: Ginkgolide B MF: C20H24O10 MW: 424.4 CAS: 15291-77-7 Package:25kg/drum Port:ShangHai

Ginkgolide B 15291-77-7

Cas:15291-77-7

Min.Order:10 Kilogram

Negotiable

Type:Trading Company

inquiry

Hangzhou Dingyan Chem Co., Ltd

Hangzhou Dingyan Chem is a leading manufacturer and supplier of chemicals in China.We develop,produce and distribute high quality pharmaceuticals, intermediates, special chemicals and other fine chemicals. We could give you: 1.Best qualit

Ginkgolide B

Cas:15291-77-7

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

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

ginkgolide B from ginkgo leaves

Cas:15291-77-7

Min.Order:0

Negotiable

Type:Other

inquiry

GIHI CHEMICALS CO.,LIMITED

high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier

Ginkgolide B

Cas:15291-77-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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

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 Ginkgolide B G63461 20mg

Cas:15291-77-7

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

Ginkgolide B

Cas:15291-77-7

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Aecochem Corp.

Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS

Ginkgolide B

Cas:15291-77-7

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Xi`an Eastling Biotech Co., Ltd.

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:Beijing or Guangzhou

Ginkgolide B

Cas:15291-77-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

α-benzylginkgolide B
170288-58-1

α-benzylginkgolide B

ginkgolide B
15291-77-7

ginkgolide B

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal In ethanol under 2888 Torr; for 24h;97%
1-O-(tert-Butyldiphenylsilyl)ginkgolid B
130523-06-7

1-O-(tert-Butyldiphenylsilyl)ginkgolid B

ginkgolide B
15291-77-7

ginkgolide B

Conditions
ConditionsYield
With tetrabutyl ammonium fluoride In tetrahydrofuran for 2h;73%
C28H32O11
145473-36-5

C28H32O11

ginkgolide B
15291-77-7

ginkgolide B

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal In methanol at 23℃; under 760 Torr; for 5h; Yield given;
7-trifluoromethanesulfonyloxy ginkgolide B
173102-79-9

7-trifluoromethanesulfonyloxy ginkgolide B

ginkgolide B
15291-77-7

ginkgolide B

Conditions
ConditionsYield
With tetrabutylammonium borohydride
1,3,7,10-Tetrahydroxyginkgolid
15291-76-6

1,3,7,10-Tetrahydroxyginkgolid

ginkgolide B
15291-77-7

ginkgolide B

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: pyridine
2: nBu4NBH4
View Scheme
ginkgolide B
15291-77-7

ginkgolide B

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: diisopropylethylamine / acetonitrile / 5 h / 0 °C
2: 63 percent / 4-N,N-dimethylaminopyridine / acetonitrile / 12 h / 5 °C
3: tri-n-butyltin hydride, bisazoisobutyronitrile / benzene / 12 h / Heating
4: H2 / Pd-C / methanol / 5 h / 23 °C / 760 Torr
View Scheme
C28H32O12
145497-37-6

C28H32O12

ginkgolide B
15291-77-7

ginkgolide B

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 63 percent / 4-N,N-dimethylaminopyridine / acetonitrile / 12 h / 5 °C
2: tri-n-butyltin hydride, bisazoisobutyronitrile / benzene / 12 h / Heating
3: H2 / Pd-C / methanol / 5 h / 23 °C / 760 Torr
View Scheme
C35H31F5O13S
145497-38-7

C35H31F5O13S

ginkgolide B
15291-77-7

ginkgolide B

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: tri-n-butyltin hydride, bisazoisobutyronitrile / benzene / 12 h / Heating
2: H2 / Pd-C / methanol / 5 h / 23 °C / 760 Torr
View Scheme
Ginkgolide C
15291-76-6

Ginkgolide C

ginkgolide B
15291-77-7

ginkgolide B

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 95 percent / imidazole / dimethylformamide / 48 h
2: 66 percent / DMAP / acetonitrile / 24 h
3: 93 percent / tributyltin hydride, AIBN / toluene / 3 h / Heating
4: 73 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h
View Scheme
1-O-(tert-Butyldiphenylsilyl)ginkgolid C
130523-04-5

1-O-(tert-Butyldiphenylsilyl)ginkgolid C

ginkgolide B
15291-77-7

ginkgolide B

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 66 percent / DMAP / acetonitrile / 24 h
2: 93 percent / tributyltin hydride, AIBN / toluene / 3 h / Heating
3: 73 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h
View Scheme
1-O-(tert-Butyldiphenylsilyl)-7-O-(phenyloxythiocarbonyl)ginkgolid C
130523-05-6

1-O-(tert-Butyldiphenylsilyl)-7-O-(phenyloxythiocarbonyl)ginkgolid C

ginkgolide B
15291-77-7

ginkgolide B

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 93 percent / tributyltin hydride, AIBN / toluene / 3 h / Heating
2: 73 percent / tetrabutylammonium fluoride / tetrahydrofuran / 2 h
View Scheme
1-Chloro-4-(chloromethyl)benzene
104-83-6

1-Chloro-4-(chloromethyl)benzene

ginkgolide B
15291-77-7

ginkgolide B

10-O-p-chlorobenzylginkgolide B

10-O-p-chlorobenzylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile for 0.5h; Alkylation; Heating;98.3%
ginkgolide B
15291-77-7

ginkgolide B

tert-butylchlorodiphenylsilane
58479-61-1

tert-butylchlorodiphenylsilane

1-(tert-butyldiphenylsilyloxy)-3,10-dihydroxyginkgolid
130523-06-7

1-(tert-butyldiphenylsilyloxy)-3,10-dihydroxyginkgolid

Conditions
ConditionsYield
With 1H-imidazole In N,N-dimethyl-formamide for 48h; Ambient temperature;98%
ginkgolide B
15291-77-7

ginkgolide B

1-chloromethyl-4-fluorobenzene
352-11-4

1-chloromethyl-4-fluorobenzene

10-O-p-fluorobenzylginkgolide B

10-O-p-fluorobenzylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile for 0.5h; Alkylation; Heating;96.7%
(2-chloroethyl)dimethylamine hydrochloride
4584-46-7

(2-chloroethyl)dimethylamine hydrochloride

ginkgolide B
15291-77-7

ginkgolide B

10-O-(2-dimethylaminoethyl)ginkgolide B
914251-20-0

10-O-(2-dimethylaminoethyl)ginkgolide B

Conditions
ConditionsYield
With calcium carbonate; potassium iodide In water; acetonitrile at 85℃; Reagent/catalyst; Temperature; Flow reactor;94.1%
With calcium carbonate; potassium iodide In water; acetonitrile at 85℃; for 0.05h; Reagent/catalyst; Temperature; Concentration; Flow reactor;94.1%
4-nitrobenzyl chloride
100-14-1

4-nitrobenzyl chloride

ginkgolide B
15291-77-7

ginkgolide B

10-O-p-nitrobenzylginkgolide B

10-O-p-nitrobenzylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile for 0.5h; Alkylation; Heating;92.3%
ginkgolide B
15291-77-7

ginkgolide B

2-Bromo-4'-methoxyacetophenone
2632-13-5

2-Bromo-4'-methoxyacetophenone

10-O-p-methoxyphenacylginkgolide B

10-O-p-methoxyphenacylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile for 0.5h; Alkylation; Heating;90.1%
chloroformic acid ethyl ester
541-41-3

chloroformic acid ethyl ester

ginkgolide B
15291-77-7

ginkgolide B

10-O-ethoxycarbonylginkgolide B

10-O-ethoxycarbonylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile for 0.5h; Acylation; Heating;89.4%
ginkgolide B
15291-77-7

ginkgolide B

1-chloroacetophenone
532-27-4

1-chloroacetophenone

10-O-phenacylginkgolide B

10-O-phenacylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile for 0.5h; Alkylation; Heating;89.2%
1-hydroxybenzotriazolyl acetate
18355-05-0

1-hydroxybenzotriazolyl acetate

ginkgolide B
15291-77-7

ginkgolide B

A

C20H24O10(CH2CO)

C20H24O10(CH2CO)

B

C20H24O10(CH2CO)

C20H24O10(CH2CO)

Conditions
ConditionsYield
With pyridine; dmap In N,N-dimethyl-formamideA 88%
B 9%
ginkgolide B
15291-77-7

ginkgolide B

allyl bromide
106-95-6

allyl bromide

10-O-allylginkgolide B
289490-32-0

10-O-allylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile for 0.5h; Alkylation; Heating;87.8%
N-methyl-2-chloroethylamine hydrochloride
4535-90-4

N-methyl-2-chloroethylamine hydrochloride

ginkgolide B
15291-77-7

ginkgolide B

10-O-methylaminoethyl ginkgolide B
914251-23-3

10-O-methylaminoethyl ginkgolide B

Conditions
ConditionsYield
With calcium carbonate; potassium iodide In water; acetonitrile at 85℃; Flow reactor;83.5%
2-chloroethanamine hydrochloride
870-24-6

2-chloroethanamine hydrochloride

ginkgolide B
15291-77-7

ginkgolide B

10-O-aminoethyl ginkgolide B

10-O-aminoethyl ginkgolide B

Conditions
ConditionsYield
With calcium carbonate; potassium iodide In water; acetonitrile at 85℃; Flow reactor;79.4%
ginkgolide B
15291-77-7

ginkgolide B

ethyl bromoacetate
105-36-2

ethyl bromoacetate

A

10-O-ethyloxycarbonylmethylginkgolide B

10-O-ethyloxycarbonylmethylginkgolide B

B

1-O-ethyloxycarbonylmethylginkgolide B

1-O-ethyloxycarbonylmethylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile for 0.5h; Alkylation; Heating;A 78.3%
B 12.1%
ginkgolide B
15291-77-7

ginkgolide B

2-chloro-ethanol
107-07-3

2-chloro-ethanol

10-O-hydroxyethyl ginkgolide B

10-O-hydroxyethyl ginkgolide B

Conditions
ConditionsYield
With calcium carbonate; potassium iodide In water; acetonitrile at 85℃; Flow reactor;76.3%
With calcium carbonate; potassium iodide In water; acetonitrile at 85℃; for 0.05h; Flow reactor;76.3%
4-bromobut-2-enenitrile
42879-03-8

4-bromobut-2-enenitrile

ginkgolide B
15291-77-7

ginkgolide B

10-O-(3-cyanoallyl)ginkgolide B

10-O-(3-cyanoallyl)ginkgolide B

Conditions
ConditionsYield
With triethylamine; potassium iodide In chloroform Reflux;75%
ginkgolide B
15291-77-7

ginkgolide B

4-Methylbenzyl bromide
104-81-4

4-Methylbenzyl bromide

10-O-p-methylbenzylginkgolide B
170288-73-0

10-O-p-methylbenzylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile at 75℃; for 0.75h;72.9%
1-bromomethyl-4-iodobenzene
16004-15-2

1-bromomethyl-4-iodobenzene

ginkgolide B
15291-77-7

ginkgolide B

10-O-p-iodobenzylginkgolide B
170289-24-4

10-O-p-iodobenzylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile at 70℃; for 0.666667h;72.4%
ginkgolide B
15291-77-7

ginkgolide B

2-bromopropionitrile
19481-82-4

2-bromopropionitrile

10-O-(1-cyanoethyl)ginkgolide B

10-O-(1-cyanoethyl)ginkgolide B

Conditions
ConditionsYield
With triethylamine; potassium iodide In chloroform Reflux;71%
benzyl chloride
100-44-7

benzyl chloride

ginkgolide B
15291-77-7

ginkgolide B

α-benzylginkgolide B
170288-58-1

α-benzylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile for 0.5h; Alkylation; Heating;65.3%
ginkgolide B
15291-77-7

ginkgolide B

propargyl bromide
106-96-7

propargyl bromide

10-O-propargylated ginkgolide B

10-O-propargylated ginkgolide B

Conditions
ConditionsYield
With potassium carbonate In acetonitrile for 24h; Reflux; Inert atmosphere;65%
With potassium carbonate; potassium iodide In acetonitrile at 100℃; for 2.5h;
ginkgolide B
15291-77-7

ginkgolide B

1-bromomethyl-4-bromobenzene
589-15-1

1-bromomethyl-4-bromobenzene

10-O-p-bromobenzylginkgolide B
170289-51-7

10-O-p-bromobenzylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile at 70℃; for 0.833333h;64.5%
formaldehyd
50-00-0

formaldehyd

ginkgolide B
15291-77-7

ginkgolide B

1,10-O,O-methyleneginkgolide B

1,10-O,O-methyleneginkgolide B

Conditions
ConditionsYield
With sulfuric acid; acetic acid In tetrahydrofuran for 8h; Condensation; Heating;61.8%
3,5-dinitrobenzoic acid
99-34-3

3,5-dinitrobenzoic acid

ginkgolide B
15291-77-7

ginkgolide B

C27H26N2O15

C27H26N2O15

Conditions
ConditionsYield
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 6h;61.25%
ginkgolide B
15291-77-7

ginkgolide B

methyl iodide
74-88-4

methyl iodide

A

1-O-methylginkgolide B

1-O-methylginkgolide B

B

10-O-methylginkgolide B

10-O-methylginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetonitrile for 0.5h; Alkylation; Heating;A 26.7%
B 60.1%
bromoacetic acid tert-butyl ester
5292-43-3

bromoacetic acid tert-butyl ester

ginkgolide B
15291-77-7

ginkgolide B

10-O-(tert-butoxyformylmethyl)ginkgolide B

10-O-(tert-butoxyformylmethyl)ginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In tetrahydrofuran for 2h; Reflux;58%
ginkgolide B
15291-77-7

ginkgolide B

methyl 2-(2-iodoethoxy)acetate
84424-42-0

methyl 2-(2-iodoethoxy)acetate

10-O-(methoxyformylmethoxyethyl)ginkgolide B

10-O-(methoxyformylmethoxyethyl)ginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In tetrahydrofuran for 2h; Reflux;58%
methyl bromoethoxyethoxyacetate

methyl bromoethoxyethoxyacetate

ginkgolide B
15291-77-7

ginkgolide B

10-O-(methoxyformylmethoxyethoxyethyl)ginkgolide B

10-O-(methoxyformylmethoxyethoxyethyl)ginkgolide B

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In tetrahydrofuran for 2h; Reflux;56%
ginkgolide B
15291-77-7

ginkgolide B

4-methoxybenzoic acid
100-09-4

4-methoxybenzoic acid

A

C28H30O12

C28H30O12

B

C28H30O12

C28H30O12

Conditions
ConditionsYield
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 6h;A 8.4%
B 55.57%

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