22970-70-3

Basic information

• Product Name: (2R,3R,4S)-2,3-cis-3,4-trans-3',4',5,7-tetramethoxyflavan-3,4-diol
• Synonyms: (2R,3R,4S)-2,3-cis-3,4-trans-3',4',5,7-tetramethoxyflavan-3,4-diol
• CAS NO: 22970-70-3
• Molecular Weight: 362.379
• Mol File: 22970-70-3.mol
• Article Data: 8

Chemical Properties

• CAS DataBase Reference: (2R,3R,4S)-2,3-cis-3,4-trans-3',4',5,7-tetramethoxyflavan-3,4-diol(CAS DataBase Reference)
• NIST Chemistry Reference: (2R,3R,4S)-2,3-cis-3,4-trans-3',4',5,7-tetramethoxyflavan-3,4-diol(22970-70-3)
• EPA Substance Registry System: (2R,3R,4S)-2,3-cis-3,4-trans-3',4',5,7-tetramethoxyflavan-3,4-diol(22970-70-3)

Safety Data

• Hazardous Substances Data: 22970-70-3(Hazardous Substances Data)

Upstream product

• 14613-67-3 (2R^*,3S^*,4R^*)-5,7,3',4'-tetramethoxyflavan-3,4-diol 
• 6563-36-6 (2R^*,3S^*,4R^*)-flavan-3,4-diol 
• 67-56-1 methanol 
• 51196-02-2 5,7,3',4'-tetra-O-methylepicatechin 
• 86989-15-3 Acetic acid (2R,3S,4S)-2-(3,4-dimethoxy-phenyl)-3-hydroxy-5,7-dimethoxy-chroman-4-yl ester 
• 13650-85-6 (+/-)-taxifolin 3-acetyl-5,7,3',4'-tetramethyl ether 

Downstream Products

• 14613-67-3 (2R^*,3S^*,4S^*)-5,7,3',4'-tetramethoxyflavan-3,4-diol 
• 69256-15-1 (2R,3S,4R)-(+)-3,4,5,7,3',4'-hexahydroxyflavan 
• 20315-25-7 procyanidin B₁ 
• 12798-59-3 procyanidin B₇ 
• 23459-99-6 arecatannin A-1 
• 29106-49-8 procyanidin B₂ 
• 12798-57-1 procyanidin B₅ 
• 14613-66-2 2-[(2R,3R,4S)-2-(3,4-Dimethoxy-phenyl)-3-hydroxy-5,7-dimethoxy-chroman-4-yl]-benzene-1,3,5-triol 
• 37064-32-7 5,7,3',4'-tetra-O-methylepicatechin-4β,8-(5,7,3',4'-tetra-O-methylepicatechin) 
• 105561-65-7 octa-O-methylprocyanidin B-5 
• 86989-13-1 epicatechin-(4β->2)-phlorodlucinol hepta-O-methyl ether 3-O-acetate 
• 86989-14-2 (2R,3R,4S)-2-(3,4-Dimethoxy-phenyl)-3,5,7-trimethoxy-4-(2,4,6-trimethoxy-phenyl)-chroman 
• 61574-07-0 (2R,3R,4S)-2-(3,4-Dimethoxy-phenyl)-5,7-dimethoxy-4-(2,4,6-trimethoxy-phenyl)-chroman-3-ol 
• 3888-39-9 (2R,3R)-2,3-cis-3-acetoxy-8-<(2R,3R,4R)-2,3-cis-3,4-trans-3-acetoxy-3',4',5,7-tetramethoxyflavan-4-yl>-3',4',5,7-tetramethoxyflavan 

Relevant articles and documents

REGIO- AND STEREOSELECTIVE OXYGENATION OF FLAVAN-3-OL-, 4-ARYLFLAVAN-3-OL-, AND BIFLAVANOID-DERIVATIVES WITH POTASSIUM PERSULPHATE

The phenolic methyl ethers of flavan-3-ols, 4-arylflavan-3-ols, and (-)-fisetinidol-(4,8)-(+)-catechin biflavanoids are susceptible to regio- and stereoselective hydroxylation at C-4 in moderate to high yields with potassium persulphate/cupric sulphate in aqueous acetonitrile.The resultant 4-functionalized analogues are of both synthetic and degradative significance in condensed tannin chemistry.

Heterocycles. XVII. Sodium borohydride reduction of flavanonols and hydrolysis of (±)-fistacacidin acetates

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OCCURRENCE OF PROCYANIDINS IN NELIA MEYERI

A novel natural 4-arylflavan-3-ol has been obtained from leaves of Nelia meyeri.The same extract contains two procyanidin dimers, B-2 and B-5, and trimer C-1. 1H NMR studies furnish diagnostic chemical shift parameters for determining the points of linkag