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KMID : 0620720090150020066
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Natural Product Sciences
2009 Volume.15 No. 2 p.66 ~ p.70
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Phytochemical Study of the Aerial Parts of Conyza discoridis Growing in Saudi Arabia
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Alqasoumi Saleh I.
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Abstract
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Phytochemical investigation of the aerial parts of Conyza discoridis (L.) Desf. resulted in the isolation of the new sesquiterpene dilactone ester vernomenin-6-(2-hydroxymethyl)-acrylate (4) and two known sesquiterpene dilactones vernolepin (1) and vernomenin (3). Two known flavonols, 3-O-methylquercetin (2) and transilin (3-O-methylquercetin 7-O--D-glucopyranoside) (5), were also identified. The structures were determined utilizing physical, chemical and spectral methods.
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KEYWORD
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Conyza discoridis, Astraceae, Sesquiterpene dilactones, Vernomenin-6-(2-hydroxymethyl)-acrylate, Flavonols
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