C-p-hydroxybenzoylglycoflavones from Citrullus colocynthis

In a flavonoid investigation of the fruits and aerial parts of Citrullus colocynthis six flavone C-glycosides were identified. The fruits contained isovitexin, iso-orientin and iso-orientin 3'-methyl ether, while the aerial parts contained three new C-p-hydroxybenzyl derivatives, viz. 8-C-p-hydroxybenzoylisovitexin, 6-C-p-hydroxybenzoylvitexin, and 8-C-p-hydroxybenzoylisovitexin 4'-O-glucoside. Their chemical identity was established by NMR spectroscopic methods including 2D-NMR, as well as UV and MS analyses. Copyright (C) 1996 Elsevier Science Ltd