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Title:	Catechin-3-0-rhamoside chain procyanidins from mangrove bark
Author(s):	Achmadi, Suminar; Syahbirin, Gustini; Chonng, Elvin T.; Hemingway, Richard W.
Date:	1994
Source:	Phytochemistry 35(1):217-219
Description:	Acid-catalysed cleavage of 'purified' condensed tannin isolates from Bruguiera gymnorrhiza (tancang) bark in the presence of phloroglucinol as a capture nucleophile gave, in addition to the expected procyanidin- and prodelphinidin-phloroglucinol adducts, 3-O-α-L-rhamnopyranosyl-(+)-catechin-(4α→2)-phloroglucinol, thus providing evidence for covalently bonded glycoside moieties in the chain extender units of mangrove bark tannins.
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