105561-65-7

Basic information

• Product Name: (2R,3S,4S,2'R,3'R)-2,2'-Bis-(3,4-dimethoxy-phenyl)-5,7,5',7'-tetramethoxy-3,4,3',4'-tetrahydro-2H,2'H-[4,6']bichromenyl-3,3'-diol
• CAS NO: 105561-65-7
• Molecular Weight: 690.744
• Mol File: 105561-65-7.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: (2R,3S,4S,2'R,3'R)-2,2'-Bis-(3,4-dimethoxy-phenyl)-5,7,5',7'-tetramethoxy-3,4,3',4'-tetrahydro-2H,2'H-[4,6']bichromenyl-3,3'-diol(CAS DataBase Reference)
• NIST Chemistry Reference: (2R,3S,4S,2'R,3'R)-2,2'-Bis-(3,4-dimethoxy-phenyl)-5,7,5',7'-tetramethoxy-3,4,3',4'-tetrahydro-2H,2'H-[4,6']bichromenyl-3,3'-diol(105561-65-7)
• EPA Substance Registry System: (2R,3S,4S,2'R,3'R)-2,2'-Bis-(3,4-dimethoxy-phenyl)-5,7,5',7'-tetramethoxy-3,4,3',4'-tetrahydro-2H,2'H-[4,6']bichromenyl-3,3'-diol(105561-65-7)

Safety Data

• Hazardous Substances Data: 105561-65-7(Hazardous Substances Data)

Upstream product

• 186581-53-3 diazomethane 
• 12798-57-1 (+)-catechin-4α->6-(-)-epicatechin 
• 51196-02-2 5,7,3',4'-tetra-O-methylepicatechin 
• 12798-57-1 procyanidin B₅ 
• 22970-70-3 (2R,3R,4S)-2,3-cis-3,4-trans-3',4',5,7-tetramethoxyflavan-3,4-diol 
• 490-46-0 (2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol 

Downstream Products

• 78139-46-5 (2R,3R)-2,3-cis-3-acetoxy-6-<(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

SYNTHESIS AND CHARACTERIZATION OF PROCYANIDIN DIMERS AS THEIR PERACETATES AND OCTAMETHYL ETHER DIACETATES

Key Word Index - Biomimetic synthesis; procyanidins B1-B8; 3,4-cis-biflavanoid; all--bi--(+)-catechin; 1H NMR parameters. Condensation of (2R,3S,4R or S)-leucocyanidin or the 5,7,3',4'-tetramethyl ether of (2R,3R,4S)-leucocyanidin with flavan-3-ols yielded dimeric flavanoids which were converted to their octamethyl ether diacetates, or the deca-acetates for the 2,3-trans-procyanidin series.Comparison is made of the 1H NMR spectra of the deca-acetate and octamethyl ether diacetate derivatives which lead to useful diagnostic shift parameters characteristic of their structures.Condensation afforded a novel biflavanoid with a 3,4-cis-configuration and a triflavanoid of 'mixed' stereochemistry.

Synthesis of Condensed Tannins. Part 12. Direct Access to - and -all-2,3-cis-Procyanidin Derivatives from (-)-Epicatechin: Assessment of Bonding Positions in Oligomeric Analogues from Crataegus oxyacantha L.

Synthesis of methyl ester acetates of - and -all-2,3-cis-procyanidin biflavanoids is effected by oxidative functionalization of (-)-epicatechin tetramethyl ester with lead tetra-acetate, and condensation of the resultant 2,3-cis-flavan-3,4-diol