Acylated flavonoid tetraglycoside from Planchonia careya leaves |
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| Institution: | 1. Environment and Biotechnology Centre, Faculty of Life and Social Sciences, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia;2. CSIRO Molecular and Health Technologies, Clayton, Victoria 3169, Australia |
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| Abstract: | Phytochemical investigations of the aqueous extract of Planchonia careya leaves revealed two known flavonol glycosides, kaempferol 3-O-gentiobioside (1) and quercetin 3-O-glucoside (isoquercitrin) (2), and a novel acylated kaempferol tetraglycoside, kaempferol 3-O-α-rhamnopyranosyl(1 → 3)-(2-O-p-coumaroyl)]-β-glucopyranoside, 7-O-α-rhamnopyranosyl-(1 → 3)-(4-O-p-coumaroyl)]-α-rhamnopyranoside (3). Structural elucidation was achieved using UV, NMR, and mass spectrometry. |
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