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Flavonoid, iridoid, and lignan glycosides from Putoria calabrica

Calis, Ihsan ; Heilmann, Jörg ; Tasdemir, Deniz ; Linden, Anthony ; Ireland, Chris M. ; Sticher, Otto


From the aerial parts of Putoria calabrica, two new flavonol triglycosides were isolated and their structures were elucidated as quercetin-3-O-[alpha -L-rhamnopyranosyl-(1->2)-alpha -L-arabinopyranoside]-7-O-beta -D-glucopyranoside (I, calabricoside A) and quercetin-3-O-[4'''-O-caffeoyl-alpha -L-rhamnopyranosyl-(1->2)-alpha -L-arabinopyranoside]-7-O-beta -D-glucopyranoside (II, calabricoside B). ...


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