889471-78-7

Upstream product

• 331-39-5 caffeic acid 
• 6346-05-0 3-benzyloxy-4-methoxybenzaldehyde 
• 1006589-37-2 (E)-ethyl 3-(3-benzyloxy-4-hydroxyphenyl)acrylate 
• 868671-93-6 3-benzyloxy-4-hydroxy-trans-cinnamic acid methyl ester 
• 3843-74-1 Methyl caffeate 

Downstream Products

• 1146696-35-6 (2R,3R)-epicatechin-4'-O-β-D-glucuronic acid 
• 1390644-12-8 (2R,3R)-epicatechin 4'-O-α-D-glucuronic acid 
• 1390643-79-4 (2R,3S)-4'-(tert-butyldimethylsilyl)-5,7,3'-tri-O-benzylcatechin 
• 1390643-82-9 (2R)-4'-(tert-butyldimethylsilyloxy)-5,7,3'-tribenzyloxyflavan-3-one 
• 1390643-85-2 (2R,3R)-4'-(tert-butyldimethylsilyl)-5,7,3'-tri-O-benzylepicatechin 
• 1390643-88-5 (2R,3R)-4'-(tert-butyldimethylsilyl)-5,7,3'-tri-O-benzyl-3-acetylepicatechin 
• 1390643-90-9 (2R,3R)-5,7,3'-tri-O-benzyl-3-acetylepicatechin 
• 1390643-92-1 C₅₁H₅₀O₁₆ 
• 1390643-70-5 C₃₆H₃₄O₇ 
• 1390643-73-8 (2R,3S)-5,7,3'-tri-O-benzyl-3-formylcatechin 
• 1390644-06-0 (E)-(2-(benzyloxy)-4-(3-(2,4-bis(benzyloxy)-6-((tert-butyldimethylsilyl)oxy)phenyl)prop-1-en-1-yl)phenoxy)(tert-butyl)dimethylsilane 
• 1390644-09-3 (1S,2S)-1-(3-(benzyloxy)-4-((tert-butyldimethylsilyl)oxy)phenyl)-3-(2,4-bis(benzyloxy)-6-((tert-butyldimethylsilyl)oxy)phenyl)propane-1,2-diol 
• 1390643-76-1 (2R,3S)-4'-(tert-butyldimethylsilyl)-5,7,3'-tri-O-benzyl-3-formylcatechin 
• 1390644-03-7 (E)-3,5-bis(benzyloxy)-2-(3-(3-(benzyloxy)-4-hydroxyphenyl)allyl)phenol 

Relevant academic research and scientific papers

SYNTHESIS OF CATECHIN AND EPICATECHIN CONJUGATES

The present invention relates generally to catechin and epicatechin conjugates of formula (I). For example, a chemical synthesis process for the preparation of catechin and epi-catechin compounds, in particular of catechin and epi-catechin conjugates is disclosed. A further aspect of the invention pertains to new catechin and epi-catechin conjugate compounds.

Synthesis of catechin and epicatechin conjugates

The present invention relates generally to catechin and epicatechin conjugates of formula (I). For example, a chemical synthesis process for the preparation of catechin and epi-catechin compounds, in particular of catechin and epi-catechin conjugates is disclosed. A further aspect of the invention pertains to new catechin and epi-catechin conjugate compounds.

Epicatechin B-ring conjugates: First enantioselective synthesis and evidence for their occurrence in human biological fluids

Herein, the first enantioselective total synthesis of a number of biologically relevant (-)-epicatechin conjugates is described. The success of this synthesis relied on (i) optimized conditions for the stereospecific cyclization step leading to the catechin C ring; on (ii) efficient conjugation reactions; and on (iii) optimized deprotection sequences. These standard compounds have been subsequently used to elucidate for the first time the pattern of (-)-epicatechin conjugates present in four different human biological fluids following (-)-epicatechin absorption.

New derivatives of silybin and 2,3-dehydrosilybin and their cytotoxic and P-glycoprotein modulatory activity

Large series of O-alkyl derivatives (methyl and benzyl) of silybin and 2,3-dehydrosilybin was prepared. Selective alkylation of the silybin molecule was systematically investigated. For the first time we present here, for example, preparation of 19-nor-2,