Two triacylated and tetraglucosylated anthocyanins from Ipomoea asarifolia flowers |
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| Authors: | Pale Eloi Kouda-Bonafos Marie Nacro Mouhoussine Vanhaelen Maurice Vanhaelen-Fastré Renée |
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| Affiliation: | Laboratoire de Chimie Organique Appliquée, Département de Chimie, Unité de Formation et de Recherche en Sciences Exactes et Appliquées, Université de Ouagadougou 03 B.P. 7021, Ouagadougou, Burkina Faso. eloi_pale@univ-ouaga.bf |
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| Abstract: | 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-beta-D-glucopyranosyl)]-[6-O-[4-O-(6-O-E-3,5-dihydroxycinnamoyl-beta-D-glucopyranosyl)-E-caffeoyl]-beta-D-glucopyranosyl]-5-O-beta-D-glucopyranoside and cyanidin 3-O-[2-O-(6-O-E-p-coumaroyl-beta-D-glucopyranosyl)]-[6-O-[4-O-(6-O-E-p-coumaroyl-beta-D-glucopyranosyl)-E-caffeoyl]-beta-D-glucopyranosyl]-5-O-beta-D-glucopyranoside. |
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| Keywords: | Ipomoea asarifolia Convolvulaceae Acylated anthocyanins Cyanidin p-Coumaric acid Caffeic acid 3,5-Dihydroxycinnamic acid |
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