Benzophenone glycosides from Gnidia involucrata |
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Authors: | Ferrari J Terreaux C Sahpaz S Msonthi J D Wolfender J L Hostettmann K |
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Affiliation: | Institut de Pharmacognosie et Phytochimie, Université de Lausanne, Switzerland. |
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Abstract: | Six compounds have been isolated from the methanol extract of the aerial parts of Gnidia involucrata (Thymelaeaceae). They were identified as 2,3,4',5,6-pentahydroxybenzophenone-4-C-glucoside and 2,4',6-trihydroxy-4-methoxybenzophenone-2-O-glucoside, together with mangiferin, kaempferol-3-O-glucoside, yuankanin and manniflavanone by chemical and spectroscopic means. The structures of three additional C-glycosyl flavones--vitexin, isovitexin and isoorientin--were determined on-line by LC/UV/APCI-MSn analysis of the crude extract. |
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