69119-49-9

Upstream product

• 51079-25-5 (2R,3S)-(+)-catechin 3',4',5,7-tetramethyl ether 
• 78376-73-5 6,8-dibromo-3',4',5,7-tetra-O-methyl-(+)-catechin 
• 69119-47-7 3-O-benzyl-6-methoxycarbonyl-3',4',5,7-tetra-O-methyl-(+)-catechin 
• 69119-42-2 3-O-benzyl-6,8-dibromo-3',4',5,7-tetra-O-methyl-(+)-catechin 
• 69119-40-0 6-bromo-3',4',5,7-tetra-O-methyl-(+)-catechin 
• 154-23-4 catechin 
• 108-24-7 acetic anhydride 
• 69119-48-8 6-methoxycarbonyl-3',4',5,7-tetra-O-methyl-(+)-catechin 
• 186581-53-3 diazomethane 
• 124-38-9 carbon dioxide 

Relevant academic research and scientific papers

BIFLAVANOID PROGUIBOURTINIDIN CARBOXYLIC ACIDS AND THEIR BIFLAVANOID HOMOLOGUES FROM ACACIA LUEDERITZII

Key Word Index - Acacia luederitzii; Leguminosae; leucoguibourtinidins; proguibourtinidins; carboxylic acids; 3,4',7-trihydroxyflavanyls; regio-isomerism; diastereoisomers; 6-carboxyl-(+)-catechin; biflavanoids. - - and -proguibourtinidin carboxylic acids (3,7,4'-trihydroxyl functionality) of 2,3-trans-3,4-trans:2,3-cis- and 2,3-trans-3,4-trans:2,3-trans-configuration based on (-)-epicatechin or (+)-catechin as constituent units, and their associated biflavanoid homologues, predominate in the heartwood of Acacia luederitzii.They are accompanied by stereochemical and functional analogues and by their putative flavan-3,4-diol and flavan-3-ol precursors.

Synthesis of Condensed Tannins. Part 3. Chemical Shifts for Determining the 6- and 8-Bonding Positions of 'Terminal' (+)-Catechin Units

Pairs of 6- and 8-functionalised (Br, OH, OAc, CO2Me, and CH2Me groups) 3',4',5,7-tetra-O-methyl-(+)-catechins available through selective bromination and debromination reactions and hence via lithio-analogues, provide diagnostic chemical shifts of their