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Benzophenone glycosides from Gnidia involucrata

Ferrari, J.
Terreaux, C.
Sahpaz, S.
Msonthi, J.D.
Published in Phytochemistry. 2000, vol. 54, p. 883-889
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. (C) 2000 Elsevier Science Ltd. All rights reserved.
Keywords gnidia involucratathymelaeaceaebenzophenone glycosidesbiflavanoneyuankaninmangiferinmanniflavanoneflavonoid c-glycosideswikstroemia-sikokianachemistry
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