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Two triacylated and tetraglucosylated anthocyanins from Ipomoea asarifolia flowers

par Palé, Eloi;Kouda-Bonafos, Marie;Nacro, Mouhoussine;Vanhaelen, Maurice ;Vanhaelen Fastré, Renée
Référence Phytochemistry, 64, 8, page (1395-1399)
Publication Publié, 2003-12

Article révisé par les pairs

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Résumé :

Two triacylated and tetraglucosylated anthocyanins derived from cyanidin were isolated from the flowers of Ipomoea asarifolia and their structures elucidated using chemical, GC, MS and NMR methods (1H and 13C, TOCSY-1D, DQF-COSY, DIFFNOE and HMBC). These complex pigments were found to consist of cyanidin 3-O-[2-O-(6-O-E-caffeoyl-β -D-glucopyranosyl)]-{6-O-[4-O-(6-O-E-3,5-dihydroxycinnamoyl-β -D-glucopyranosyl)-E-caffeoyl]-β-D-glucopyranosyl}-5-O-β -D-glucopyranoside and cyanidin 3-O-[2-O-(6-O-E-p-coumaroyl-β -D-glucopyranosyl)]-{6-O-[4-O-(6-O-E-p-coumaroyl-β-D-glucopyranosyl) -E-caffeoyl]-β-D-glucopyranosyl}-5-O-β-D-glucopyranoside. © 2003 Elsevier Ltd. All rights reserved.