Methoxyflavonoids from Pinaropappus roseus

Authors : Ü Şebnem HARPUT, İclal SARACOĞLU, Yukio OGIHARA

Pages : 761-766

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Three rare methoxyflavonoids, rhamnazin 3-O-rutinoside insert ignore into journalissuearticles values(1);, rhamnocitrin 3-O-rutinoside insert ignore into journalissuearticles values(2); and isorhamnetin 3-O-rutinoside insert ignore into journalissuearticles values(3);, were isolated from the methanolic extract of Pinaropappus roseus together with 2 well-known flavonoids, quercetin 3-O-rutinoside insert ignore into journalissuearticles values(=rutin); insert ignore into journalissuearticles values(4); and kaempferol 3-O-rutinoside insert ignore into journalissuearticles values(5);. The structures of the isolated compounds were elucidated on the basis of UV, 1D and 2D NMR and FAB-Mass spectral analysis. Free radical scavenging activities of the isolated compounds were also demonstrated. This is the first report on the chemical composition of the genus Pinaropappus.
Keywords : Pinaropappus roseus, Asteraceae, rhamnazin 3 O rutinoside, rhamnocitrin 3 O rutinoside, isorhamnetin 3 O rutinoside, flavonoids