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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

Procyanidin B2

Cas:29106-49-8

Min.Order:0 Gram

Negotiable

Type:Lab/Research institutions

inquiry

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

Procyanidin B2 manufacturer

Cas:29106-49-8

Min.Order:0

Negotiable

Type:Trading Company

inquiry

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

Proanthocyanidin B2 Manufacturer/High quality/Best price/In stock

Cas:29106-49-8

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 Procyanidin B2 supplier in China

Cas:29106-49-8

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

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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 Procyanidin B2

Cas:29106-49-8

Min.Order:1

Negotiable

Type:Other

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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

Procyanidin B2

Cas:29106-49-8

Min.Order:10 Milligram

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

Natural Extract 98% PROCYANIDIN B2 29106-49-8 HACCP Manufacturer

Cas:29106-49-8

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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 on.O

discount PROCYANIDIN B2

Cas:29106-49-8

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Lab/Research institutions

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 29106-49-8 with competitive price

Cas:29106-49-8

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

inquiry

Henan Sinotech Import&Export Corporation

Name PROCYANIDIN B2 CAS No 29106-49-8 MF C30H26O12 Purity 99% Appearance white powder Appearance: white powder Storage:Store in co

Procyanidin B2 CAS:29106-49-8

Cas:29106-49-8

Min.Order:5 Metric Ton

FOB Price: $1.0 / 2.0

Type:Other

inquiry

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

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) Parc

Procyanidin B2.

Cas:29106-49-8

Min.Order:1 Gram

FOB Price: $1.0 / 5.0

Type:Trading Company

inquiry

Leader Biochemical Group

About Product Details Items Specifications Test Results Appearance White to white crystalline powde

China Biggest Factory Manufacturer Supply Procyanidin B2 CAS 29106-49-8

Cas:29106-49-8

Min.Order:100 Kilogram

FOB Price: $1.0 / 2.0

Type:Lab/Research institutions

inquiry

Hubei CuiRan Biotechnology Co., Ltd

Basic Information Product Categories Biochemical >> Natural products English name is Proanthocyanidin B2 Aliases Procyanidin B2; Procyanidol B2; (2R,2'R,3R,3'R,4R)-2,2'-Bis(3,4-dihydroxyphenyl)-3,3',4,4'-tetrahydro-[4,8&#3

Proanthocyanidin B2

Cas:29106-49-8

Min.Order:10 Milligram

Negotiable

Type:Lab/Research institutions

inquiry

Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At present,

PROCYANIDIN B2

Cas:29106-49-8

Min.Order:1 Milligram

FOB Price: $10.0

Type:Trading Company

inquiry

Qingdao Beluga Import and Export Co., LTD

PROCYANIDIN B2 CAS:29106-49-8 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 intermedia

PROCYANIDIN B2 CAS:29106-49-8

Cas:29106-49-8

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

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

Afine Chemicals Limited

Company Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments

PROCYANIDIN B2

Cas:29106-49-8

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Binbo Biological Co., Ltd

1.high purity 2.consistent quality 3.competitive price 4.fast shipping Binbo Biological Products Co. Ltd., is a professional high-tech enterprise which engaged in Biological products and raw materials. Binbo is engaged in R&D with perfect eq

Natural Procyanidin B2

Cas:29106-49-8

Min.Order:1 Kilogram

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

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

PROCYANIDIN B2

Cas:29106-49-8

Min.Order:1 Gram

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

High quality Procyanidin B2

Cas:29106-49-8

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

Zibo Dorne chemical technology co. LTD

Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,

Proanthocyanidin B2

Cas:29106-49-8

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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

Procyanidin B2 99%

Cas:29106-49-8

Min.Order:1 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

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

Procyanidin B2 CAS NO.29106-49-8 CAS NO.29106-49-8

Cas:29106-49-8

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

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

Procyanidin B2

Cas:29106-49-8

Min.Order:0

Negotiable

Type:Trading Company

inquiry

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

PROCYANIDIN B2

Cas:29106-49-8

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

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

Procyanidin B2 CAS NO.29106-49-8 CAS NO.29106-49-8

Cas:29106-49-8

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

inquiry

Triumph International Development Limilted

Triumph has the complete production of G- KG - MT service chain,we can make the new technology into productivity quickly in the research and development of new products. Main Business Custom Synthesis:

PROCYANIDIN B2

Cas:29106-49-8

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

3',4',5,7-tetra-O-benzyl-8-bromoepicatechin-4β,8-(3',4',5,7-tetra-O-benzylepicatechin)
442626-19-9

3',4',5,7-tetra-O-benzyl-8-bromoepicatechin-4β,8-(3',4',5,7-tetra-O-benzylepicatechin)

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
With hydrogen; sodium hydrogencarbonate; triethylamine; palladium dihydroxide In methanol; water; ethyl acetate at 20℃; for 18h;99%
5,7,3',4'-tetra-O-benzyl-(-)-epicatechin-(4β,8)-[5,7,3',4'-tetra-O-benzyl-(-)-epicatechin]
223387-28-8

5,7,3',4'-tetra-O-benzyl-(-)-epicatechin-(4β,8)-[5,7,3',4'-tetra-O-benzyl-(-)-epicatechin]

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
With hydrogen; palladium dihydroxide In tetrahydrofuran; methanol; water at 20℃; for 12h;86%
With palladium hydroxide on carbon; hydrogen In water; ethyl acetate at 20℃; under 760.051 Torr; for 18h;85%
With 20 % Pd(OH)2/C; hydrogen In water; ethyl acetate at 20℃; for 18h;85%
4β-benzylthioepicatechin
37064-35-0

4β-benzylthioepicatechin

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
silver tetrafluoroborate In tetrahydrofuran at 0℃; for 1h; Condensation;37%
procyanidin B2-3,3'-di-O-gallate
79907-44-1, 123051-12-7, 134054-57-2

procyanidin B2-3,3'-di-O-gallate

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
With tannase In water at 37℃; for 1h;
procyanidin B2-3,3'-di-O-gallate
79907-44-1, 123051-12-7, 134054-57-2

procyanidin B2-3,3'-di-O-gallate

A

procyanidin B2
29106-49-8

procyanidin B2

B

3,4,5-trihydroxybenzoic acid
149-91-7

3,4,5-trihydroxybenzoic acid

Conditions
ConditionsYield
With tannase at 37℃; for 1h; 0.05 M acetate buffer (pH 5.0);
kandelin B-1
96182-33-1

kandelin B-1

A

procyanidin B2
29106-49-8

procyanidin B2

B

(2R,3R,4R,10R)-4-[(2R,3S,4S)-4-Benzylsulfanyl-2-(3,4-dihydroxy-phenyl)-3,5,7-trihydroxy-chroman-8-yl]-2,10-bis-(3,4-dihydroxy-phenyl)-3,5-dihydroxy-3,4,9,10-tetrahydro-2H-pyrano[2,3-f]chromen-8-one

(2R,3R,4R,10R)-4-[(2R,3S,4S)-4-Benzylsulfanyl-2-(3,4-dihydroxy-phenyl)-3,5,7-trihydroxy-chroman-8-yl]-2,10-bis-(3,4-dihydroxy-phenyl)-3,5-dihydroxy-3,4,9,10-tetrahydro-2H-pyrano[2,3-f]chromen-8-one

Conditions
ConditionsYield
With acetic acid; phenylmethanethiol In ethanol for 8h; Heating;
(-)-epicatechin-<4β->8>-(-)-epicatechin-<4β->8>-(-)-epicatechin-<4β->8>-(-)-epicatechin
86631-38-1

(-)-epicatechin-<4β->8>-(-)-epicatechin-<4β->8>-(-)-epicatechin-<4β->8>-(-)-epicatechin

phenylmethanethiol
100-53-8

phenylmethanethiol

A

procyanidin B2
29106-49-8

procyanidin B2

B

4β-benzylthioepicatechin
37064-35-0

4β-benzylthioepicatechin

C

(2R,3R,4R)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-<(2R,3S,4S)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-benzylthioflavan-8-yl>flavan
68200-27-1

(2R,3R,4R)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-<(2R,3S,4S)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-benzylthioflavan-8-yl>flavan

D

procyanidin C1
37064-30-5

procyanidin C1

E

procyanidin C-1 4''-benzylthioether
103215-52-7

procyanidin C-1 4''-benzylthioether

F

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

Conditions
ConditionsYield
acetic acid In ethanol for 6h; Product distribution; Heating; other reaction time;
epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin
86631-39-2

epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin

phenylmethanethiol
100-53-8

phenylmethanethiol

A

procyanidin B2
29106-49-8

procyanidin B2

B

4β-benzylthioepicatechin
37064-35-0

4β-benzylthioepicatechin

C

(2R,3R,4R)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-<(2R,3S,4S)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-benzylthioflavan-8-yl>flavan
68200-27-1

(2R,3R,4R)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-<(2R,3S,4S)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-benzylthioflavan-8-yl>flavan

D

procyanidin C1
37064-30-5

procyanidin C1

E

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

Conditions
ConditionsYield
acetic acid In ethanol for 6h; Product distribution; Heating; other reaction time;
epicatechin (4β,8)5-hexamer
88847-05-6

epicatechin (4β,8)5-hexamer

phenylmethanethiol
100-53-8

phenylmethanethiol

A

procyanidin B2
29106-49-8

procyanidin B2

B

4β-benzylthioepicatechin
37064-35-0

4β-benzylthioepicatechin

C

(2R,3R,4R)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-<(2R,3S,4S)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-benzylthioflavan-8-yl>flavan
68200-27-1

(2R,3R,4R)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-<(2R,3S,4S)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-benzylthioflavan-8-yl>flavan

D

procyanidin C1
37064-30-5

procyanidin C1

E

epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin
86631-39-2

epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin-(4β->8)-epicatechin

F

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

Conditions
ConditionsYield
acetic acid In ethanol for 5h; Product distribution; Heating; other reaction time;
epicatechin-(4β-6)-epicatechin-(4β-8)-epecatechin

epicatechin-(4β-6)-epicatechin-(4β-8)-epecatechin

phenylmethanethiol
100-53-8

phenylmethanethiol

A

procyanidin B2
29106-49-8

procyanidin B2

B

procyanidin B-5 4'-benzykthioether
78591-32-9, 82863-23-8

procyanidin B-5 4'-benzykthioether

Conditions
ConditionsYield
In ethanol; acetic acid for 8h; Heating; degradation;
phenylmethanethiol
100-53-8

phenylmethanethiol

A

procyanidin B2
29106-49-8

procyanidin B2

B

proanthocyanidin A-2 4'-benzylthioether
50562-99-7, 114612-76-9, 140145-59-1

proanthocyanidin A-2 4'-benzylthioether

C

4β-benzylthioepicatechin
37064-35-0

4β-benzylthioepicatechin

D

cinnamtannin B1 4''-benzylthioether
114586-49-1, 114613-61-5

cinnamtannin B1 4''-benzylthioether

E

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

Conditions
ConditionsYield
With hydrogenchloride for 2h; Heating; partial thiolytic degradation;A 7 mg
B 30 mg
C 15 mg
D 284 mg
E 10 mg
phenylmethanethiol
100-53-8

phenylmethanethiol

A

procyanidin B2
29106-49-8

procyanidin B2

B

4β-benzylthioepicatechin
37064-35-0

4β-benzylthioepicatechin

E

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

Conditions
ConditionsYield
With hydrogenchloride for 2h; Heating; partial thiolytic degradation;A 16 mg
B 8 mg
C 12 mg
D 152 mg
E 5 mg
(2R,3R,4R)-2,3-cis-3,4-trans-3,3',4',5,7-pentahydroxy-4-<(2R,3S,4S)-2,3-cis-3,4-trans-3,3',4',5,7-pentahydroxy-4-phenylthioflavan-8-yl>flavan

(2R,3R,4R)-2,3-cis-3,4-trans-3,3',4',5,7-pentahydroxy-4-<(2R,3S,4S)-2,3-cis-3,4-trans-3,3',4',5,7-pentahydroxy-4-phenylthioflavan-8-yl>flavan

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
With W-2 Raney-Ni
(2R,3R,4S)-2,3-cis-3,4-trans-3',4',5,7-tetramethoxyflavan-3,4-diol
22970-70-3

(2R,3R,4S)-2,3-cis-3,4-trans-3',4',5,7-tetramethoxyflavan-3,4-diol

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

A

procyanidin B2
29106-49-8

procyanidin B2

B

procyanidin B5
12798-57-1

procyanidin B5

Conditions
ConditionsYield
With hydrogenchloride Ambient temperature;
procyanidin C1
37064-30-5

procyanidin C1

phenylmethanethiol
100-53-8

phenylmethanethiol

A

procyanidin B2
29106-49-8

procyanidin B2

B

4β-benzylthioepicatechin
37064-35-0

4β-benzylthioepicatechin

C

(2R,3R,4R)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-<(2R,3S,4S)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-benzylthioflavan-8-yl>flavan
68200-27-1

(2R,3R,4R)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-<(2R,3S,4S)-2,3-cis-3,4-trans-3,5,7,3',4'-pentahydroxy-4-benzylthioflavan-8-yl>flavan

D

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

Conditions
ConditionsYield
In ethanol at 94℃;
(-)-epicatechin-<4β->6>-(-)-epicatechin-<4β->8>-(-)-epicatechin
82801-35-2, 99297-47-9, 128779-44-2, 101469-10-7

(-)-epicatechin-<4β->6>-(-)-epicatechin-<4β->8>-(-)-epicatechin

phenylmethanethiol
100-53-8

phenylmethanethiol

A

procyanidin B2
29106-49-8

procyanidin B2

B

4β-benzylthioepicatechin
37064-35-0

4β-benzylthioepicatechin

C

epicatechin-(4β<*>6)-epicatechin-(4β<*>S)-benzylthioether
82863-23-8

epicatechin-(4β<*>6)-epicatechin-(4β<*>S)-benzylthioether

D

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

Conditions
ConditionsYield
In ethanol at 94℃;
(+)-epicatechin
35323-91-2

(+)-epicatechin

tannin

tannin

A

procyanidin B2
29106-49-8

procyanidin B2

B

procyanidin B5
12798-57-1

procyanidin B5

Conditions
ConditionsYield
With hydrogenchloride In 1,4-dioxane; water at 25℃; for 48h;
tannin extract of roots of Fragaria vesca

tannin extract of roots of Fragaria vesca

A

procyanidin B2
29106-49-8

procyanidin B2

B

procyanidin B1
20315-25-7

procyanidin B1

C

procyanidin B5
12798-57-1

procyanidin B5

D

catechin
154-23-4

catechin

Conditions
ConditionsYield
In ethanol; water at 27℃; for 108h; fermentation; Saccharomyces rouxii; Further byproducts given;
(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

palm procyanidin polymer

palm procyanidin polymer

A

procyanidin B2
29106-49-8

procyanidin B2

B

ent-epicatechin-(4α->8)-epicatechin
88314-64-1

ent-epicatechin-(4α->8)-epicatechin

Conditions
ConditionsYield
With acetic acid In ethanol at 95℃; for 22h;
(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

procyanidins from Phoenix canariensis

procyanidins from Phoenix canariensis

A

procyanidin B2
29106-49-8

procyanidin B2

B

ent-epicatechin-(4α->8)-epicatechin
88314-64-1

ent-epicatechin-(4α->8)-epicatechin

Conditions
ConditionsYield
Multistep reaction;
tannin extract of roots of Fragaria vesca

tannin extract of roots of Fragaria vesca

A

procyanidin B2
29106-49-8

procyanidin B2

B

procyanidin B1
20315-25-7

procyanidin B1

C

procyanidin B5
12798-57-1

procyanidin B5

D

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

Conditions
ConditionsYield
In ethanol; water at 27℃; for 108h; fermentation; Saccharomyces rouxii; Further byproducts given;
[4,8']-2,3-cis-3,4-trans-2',3'-cis-octa-O-benzyl-3-O-acetyl-bi-(-)-epicatechin

[4,8']-2,3-cis-3,4-trans-2',3'-cis-octa-O-benzyl-3-O-acetyl-bi-(-)-epicatechin

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
Stage #1: [4,8']-2,3-cis-3,4-trans:2',3'-cis-octa-O-benzyl-3-O-acetyl-bi-(-)-epicatechin With potassium carbonate In methanol
Stage #2: With hydrogen; palladium dihydroxide In tetrahydrofuran; methanol; water Further stages.;
3’,4’,5,7-tetra-O-benzyl-4β-(2-hydroxyethyloxy)epicatechin
223387-26-6

3’,4’,5,7-tetra-O-benzyl-4β-(2-hydroxyethyloxy)epicatechin

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 99 percent / N-bromosuccinimide / CH2Cl2 / -78 - 20 °C
2: 43 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 3 h / 20 °C
3: 99 percent / H2; Et3N; NaHCO3 / Pd(OH)2/C / H2O; methanol; ethyl acetate / 18 h / 20 °C
View Scheme
3’,4’,5,7-tetra-O-benzyl-4β-(2-hydroxyethyloxy)-8-bromoepicatechin
223387-42-6

3’,4’,5,7-tetra-O-benzyl-4β-(2-hydroxyethyloxy)-8-bromoepicatechin

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 43 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 3 h / 20 °C
2: 99 percent / H2; Et3N; NaHCO3 / Pd(OH)2/C / H2O; methanol; ethyl acetate / 18 h / 20 °C
View Scheme
5,7,3',4'-tetra-O-benzylepicatechin
87292-49-7

5,7,3',4'-tetra-O-benzylepicatechin

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: DDQ / CH2Cl2 / 3 h / 20 °C
1.2: 63 percent / DMAP / CH2Cl2 / 0.33 h
2.1: 99 percent / N-bromosuccinimide / CH2Cl2 / -78 - 20 °C
3.1: 43 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 3 h / 20 °C
4.1: 99 percent / H2; Et3N; NaHCO3 / Pd(OH)2/C / H2O; methanol; ethyl acetate / 18 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: 43 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 3 h / 20 °C
2: 99 percent / H2; Et3N; NaHCO3 / Pd(OH)2/C / H2O; methanol; ethyl acetate / 18 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: TMSOTf / CH2Cl2 / 0.08 h / -78 °C
2: 86 percent / hydrogen / Pd(OH)2/C / tetrahydrofuran; methanol; H2O / 12 h / 20 °C
View Scheme
Multi-step reaction with 3 steps
1: 52 percent / DDQ / CH2Cl2 / 20 °C
2: 53 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 20 °C
3: H2 / 20 percent Pd(OH)2/C / tetrahydrofuran; methanol; H2O / 750.06 Torr
View Scheme
Multi-step reaction with 2 steps
1: 53 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 20 °C
2: H2 / 20 percent Pd(OH)2/C / tetrahydrofuran; methanol; H2O / 750.06 Torr
View Scheme
(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: 82 percent / K2CO3 / dimethylformamide / 0 - 20 °C
2.1: DDQ / CH2Cl2 / 3 h / 20 °C
2.2: 63 percent / DMAP / CH2Cl2 / 0.33 h
3.1: 99 percent / N-bromosuccinimide / CH2Cl2 / -78 - 20 °C
4.1: 43 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 3 h / 20 °C
5.1: 99 percent / H2; Et3N; NaHCO3 / Pd(OH)2/C / H2O; methanol; ethyl acetate / 18 h / 20 °C
View Scheme
Multi-step reaction with 3 steps
1: 82 percent / K2CO3 / dimethylformamide / 0 - 20 °C
2: 43 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 3 h / 20 °C
3: 99 percent / H2; Et3N; NaHCO3 / Pd(OH)2/C / H2O; methanol; ethyl acetate / 18 h / 20 °C
View Scheme
(2R,3S,4S)-5,7,3',4'-tetrabenzyloxy-4-(2"-ethoxyethoxy)flavan-3-ol
478796-20-2

(2R,3S,4S)-5,7,3',4'-tetrabenzyloxy-4-(2"-ethoxyethoxy)flavan-3-ol

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: TMSOTf / CH2Cl2 / 0.08 h / -78 °C
2: 86 percent / hydrogen / Pd(OH)2/C / tetrahydrofuran; methanol; H2O / 12 h / 20 °C
View Scheme
5,7,3',4'-tetra-O-benzyl-(+)-catechin
20728-73-8

5,7,3',4'-tetra-O-benzyl-(+)-catechin

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: 90 percent / Dess-Martin periodinane; H2O / CH2Cl2 / 20 °C
2: 81 percent / L-Selectride; LiBr / tetrahydrofuran / -78 °C
3: 52 percent / DDQ / CH2Cl2 / 20 °C
4: 53 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 20 °C
5: H2 / 20 percent Pd(OH)2/C / tetrahydrofuran; methanol; H2O / 750.06 Torr
View Scheme
Multi-step reaction with 4 steps
1: 90 percent / Dess-Martin periodinane; H2O / CH2Cl2 / 20 °C
2: 81 percent / L-Selectride; LiBr / tetrahydrofuran / -78 °C
3: 53 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 20 °C
4: H2 / 20 percent Pd(OH)2/C / tetrahydrofuran; methanol; H2O / 750.06 Torr
View Scheme
(+)-(2R)-5,7-bis(benzyloxy)-2-[3,4-bis(benzyloxy)phenyl]chroman-3-one
87292-54-4

(+)-(2R)-5,7-bis(benzyloxy)-2-[3,4-bis(benzyloxy)phenyl]chroman-3-one

procyanidin B2
29106-49-8

procyanidin B2

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: 81 percent / L-Selectride; LiBr / tetrahydrofuran / -78 °C
2: 52 percent / DDQ / CH2Cl2 / 20 °C
3: 53 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 20 °C
4: H2 / 20 percent Pd(OH)2/C / tetrahydrofuran; methanol; H2O / 750.06 Torr
View Scheme
Multi-step reaction with 3 steps
1: 81 percent / L-Selectride; LiBr / tetrahydrofuran / -78 °C
2: 53 percent / TiCl4 / CH2Cl2; tetrahydrofuran / 20 °C
3: H2 / 20 percent Pd(OH)2/C / tetrahydrofuran; methanol; H2O / 750.06 Torr
View Scheme
procyanidin B2
29106-49-8

procyanidin B2

dimethyl sulfate
77-78-1

dimethyl sulfate

5,7,3',4'-tetra-O-methylepicatechin-4β,8-(5,7,3',4'-tetra-O-methylepicatechin)
37064-32-7

5,7,3',4'-tetra-O-methylepicatechin-4β,8-(5,7,3',4'-tetra-O-methylepicatechin)

Conditions
ConditionsYield
With potassium carbonate In various solvent(s) at 60℃; for 4h; Methylation;41%
procyanidin B2
29106-49-8

procyanidin B2

5,7,3',4'-tetra-O-methylepicatechin-4β,8-(5,7,3',4'-tetra-O-methylepicatechin)
37064-32-7

5,7,3',4'-tetra-O-methylepicatechin-4β,8-(5,7,3',4'-tetra-O-methylepicatechin)

Conditions
ConditionsYield
In methanol; diethyl ether at -15℃; for 48h;
at -15℃; for 48h;
Stage #1: procyanidin B2 With hydrogen; palladium dihydroxide In tetrahydrofuran; methanol under 750.075 Torr; for 0.666667h; Hydrogenolysis;
Stage #2: diazomethane In diethyl ether at 20℃; for 0.133333h; Methylation; Further stages.;
4.8 mg
procyanidin B2
29106-49-8

procyanidin B2

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

Conditions
ConditionsYield
With hydrogenchloride for 0.5h; heating on a boiling water bath;
Multi-step reaction with 2 steps
1: ethanol / 1 h / boiling water bath
2: Raney nickel / ethanol / 2 h / Ambient temperature
View Scheme
procyanidin B2
29106-49-8

procyanidin B2

A

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

B

catechin
154-23-4

catechin

Conditions
ConditionsYield
phosphoric acid In water; acetonitrile at 25 - 40℃; Rate constant; acid catalysis at different pH-values;
procyanidin B2
29106-49-8

procyanidin B2

A

(-)-epicatechin-(2β→O→7,4β→8)-(-)-catechin
111466-29-6

(-)-epicatechin-(2β→O→7,4β→8)-(-)-catechin

B

(2R,3R:8S,9R,10R)-3,5,9-Trihydroxy-2,8-bis-(3,4-dihydroxyphenyl)-10-(2,4,6-trihydroxyphenyl)-2,3-cis-8,9-trans-9,10-cis-3,4,9,10-tetrahydro-2H,8H-pyrano<2,3-h>chromene
130999-36-9

(2R,3R:8S,9R,10R)-3,5,9-Trihydroxy-2,8-bis-(3,4-dihydroxyphenyl)-10-(2,4,6-trihydroxyphenyl)-2,3-cis-8,9-trans-9,10-cis-3,4,9,10-tetrahydro-2H,8H-pyrano<2,3-h>chromene

C

(2R,3R:8S,9S,10R)-3,5,9-Trihydroxy-2,10-bis-(3,4-dihydroxyphenyl)-8-(2,4,6-trihydroxyphenyl)-2,3-cis-8,9-cis-9,10-trans-3,4,9,10-tetrahydro-2H,8H-pyrano<2,3-h>chromene
131065-08-2

(2R,3R:8S,9S,10R)-3,5,9-Trihydroxy-2,10-bis-(3,4-dihydroxyphenyl)-8-(2,4,6-trihydroxyphenyl)-2,3-cis-8,9-cis-9,10-trans-3,4,9,10-tetrahydro-2H,8H-pyrano<2,3-h>chromene

D

(2S,3R:8S,9S,10R)-3,5,9-Trihydroxy-2,10-bis-(3,4-dihydroxyphenyl)-8-(2,4,6-trihydroxyphenyl)-2,3-trans-8,9-cis-9,10-trans-3,4,9,10-tetrahydro-2H,8H-pyrano<2,3-h>chromene
131065-09-3

(2S,3R:8S,9S,10R)-3,5,9-Trihydroxy-2,10-bis-(3,4-dihydroxyphenyl)-8-(2,4,6-trihydroxyphenyl)-2,3-trans-8,9-cis-9,10-trans-3,4,9,10-tetrahydro-2H,8H-pyrano<2,3-h>chromene

Conditions
ConditionsYield
With sodium hydrogencarbonate at 40℃; for 6.5h; Product distribution; Mechanism;A 17 mg
B 6 mg
C 29 mg
D 15 mg
With sodium hydrogencarbonate at 40℃; for 6.5h;A 17 mg
B 6 mg
C 29 mg
D 15 mg
procyanidin B2
29106-49-8

procyanidin B2

aesculitannin C
114569-29-8

aesculitannin C

Conditions
ConditionsYield
With dihydrogen peroxide; sodium hydrogencarbonate In ethanol for 12h; Ambient temperature;32 mg
procyanidin B2
29106-49-8

procyanidin B2

acetic anhydride
108-24-7

acetic anhydride

epicatechin-(4β->8)-epicatechin decaacetate
21179-21-5

epicatechin-(4β->8)-epicatechin decaacetate

Conditions
ConditionsYield
With pyridine
In pyridine for 24h; Ambient temperature;
With pyridine Yield given;
procyanidin B2
29106-49-8

procyanidin B2

mercaptoacetic acid
68-11-1

mercaptoacetic acid

A

[(2R,3S)-2-(3,4-Dihydroxy-phenyl)-3,5,7-trihydroxy-chroman-4-ylsulfanyl]-acetic acid

[(2R,3S)-2-(3,4-Dihydroxy-phenyl)-3,5,7-trihydroxy-chroman-4-ylsulfanyl]-acetic acid

B

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

Conditions
ConditionsYield
In ethanol for 1h; boiling water bath;
procyanidin B2
29106-49-8

procyanidin B2

phenylmethanethiol
100-53-8

phenylmethanethiol

A

4β-benzylthioepicatechin
37064-35-0

4β-benzylthioepicatechin

B

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol
490-46-0

(2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol

Conditions
ConditionsYield
With acetic acid In ethanol Heating; Yield given. Yields of byproduct given;

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