442626-19-9

Basic information

• Product Name: 3',4',5,7-tetra-O-benzyl-8-bromoepicatechin-4β,8-(3',4',5,7-tetra-O-benzylepicatechin)
• Synonyms: 3',4',5,7-tetra-O-benzyl-8-bromoepicatechin-4β,8-(3',4',5,7-tetra-O-benzylepicatechin)
• CAS NO: 442626-19-9
• Molecular Weight: 1378.42
• Mol File: 442626-19-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 3',4',5,7-tetra-O-benzyl-8-bromoepicatechin-4β,8-(3',4',5,7-tetra-O-benzylepicatechin)(CAS DataBase Reference)
• NIST Chemistry Reference: 3',4',5,7-tetra-O-benzyl-8-bromoepicatechin-4β,8-(3',4',5,7-tetra-O-benzylepicatechin)(442626-19-9)
• EPA Substance Registry System: 3',4',5,7-tetra-O-benzyl-8-bromoepicatechin-4β,8-(3',4',5,7-tetra-O-benzylepicatechin)(442626-19-9)

Safety Data

• Hazardous Substances Data: 442626-19-9(Hazardous Substances Data)

Upstream product

• 490-46-0 (2R,3R)-2-(3,4-dihydroxyphenyl)-3,4-dihydro-1[2H]-benzopyran-3,5,7-triol 
• 87292-49-7 5,7,3',4'-tetra-O-benzylepicatechin 
• 100-39-0 benzyl bromide 
• 223387-26-6 3’,4’,5,7-tetra-O-benzyl-4β-(2-hydroxyethyloxy)epicatechin 
• 223387-42-6 3’,4’,5,7-tetra-O-benzyl-4β-(2-hydroxyethyloxy)-8-bromoepicatechin 

Downstream Products

• 29106-49-8 procyanidin B₂ 

Relevant articles and documents

An improved synthesis of procyanidin dimers: Regio- and stereocontrol of the interflavan bond

A direct and general synthesis of procyanidin dimers B1, B2, B3 and B4 (10a-d) is presented. The approach is based on the stoichiometric coupling of two protected monomeric units (the nucleophilic 2a-b and electrophilic 4a-b partners) and deals with the regio- and stereocontrol of the C4-C8 interflavan bond as well as the control of the degree of oligomerization. The synthesis involves a five-step pathway starting from the native catechin (1a) or epicatechin (1b) to the fully deprotected dimers 10a-d. Furthermore, the process appears to be iterative as the coupling intermediates 9a-d themselves can be readily used in further selective syntheses of trimers or higher oligomers. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.