88314-66-3

Basic information

• Product Name: proanthocyanidin B₅
• CAS NO: 88314-66-3
• Molecular Weight: 578.529
• Mol File: 88314-66-3.mol

Chemical Properties

• CAS DataBase Reference: proanthocyanidin B₅(CAS DataBase Reference)
• NIST Chemistry Reference: proanthocyanidin B₅(88314-66-3)
• EPA Substance Registry System: proanthocyanidin B₅(88314-66-3)

Safety Data

• Hazardous Substances Data: 88314-66-3(Hazardous Substances Data)

Upstream product

• 154-23-4 (-)-catechin 
• 480-18-2 taxifolin 
• 490-46-0 (2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol 

Downstream Products

• 88079-92-9 Acetic acid (2R,3S,4R,2'S,3'R)-3,5,7,3',5'-pentaacetoxy-2,2'-bis-(3,4-diacetoxy-phenyl)-3,4,3',4'-tetrahydro-2H,2'H-[4,8']bichromenyl-7'-yl ester 

Relevant articles and documents

Synthesis and Conformation of Procyanidin Diastereoisomers

The four theoretically possible diastereoisomeric 4->8 linked procyanidin dimers with two 2,3-cis-flavanoid units, epicatechin-(4β->8)-epicatechin (6), epicatechin-(4β->8)-ent-epicatechin (8), ent-epicatechin-(4α->8)-epicatechin (7), and ent-epicatechin-(4α->8)-ent-epicatechin (2), have been synthesized together with the 2,3-trans diastereoisomers catechin-(4α->8)-catechin (14) and catechin-(4α->8)-ent-catechin (15).The preferred rotamer conformations of the deca-acetate derivatives of (6), (8), (14), and (15) in chloroform were deduced from their 13C n.m.r. and high-field 1H n.m.r. spectra.The 1H n.m.r. spectra of the preferred conformers of the pairs of acetate derivatives of (6) and (15), and (8) and (14), were qualitatively similar as the relative configuration about the interflavanoid bond of one pair has a meso-relationship to the other.