21.

Two New Flavone Glycosides from Chenopodiumambrosioides Growing Wildly in Egypt

Hala M. Hammoda, Fathalla M. Harraz, Maged G. El Ghazouly, Mohamed M. Radwan, Mahmoud A. ElSohly, Amira S. Wanas and Samar M. Bassam

Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University 21521, Alexandria, Egypt

Department of Pharmacognosy, Faculty of Pharmacy, Pharos University, Alexandria, Egypt

Department of Pharmaceutics, School of Pharmacy, University of Mississippi, MS 38677, USA

National Center for Natural Products Research, School of pharmacy, University of Mississippi, University MS 38655, USA

Department of Pharmacognosy, Faculty of Pharmacy, University of Minia, Egypt

Abstract: Chenopodiumambrosioides (Chenopodiaceae) growing wildly in Egypt was subjected to antioxidant –guided phytochemical investigation and the EtOAc fraction afforded the two new flavone glycosides; scutellarein-7-O-α-rhamnopyranosyl-(1→2)-α-rhamnopyranosyl-(1→2)-α-rhamnopyranoside (1) and scutella-rein-7-O-α-rhamnopyranosyl-(1→2)-α-rhamnopyranoside (2). In addition, the invitro antioxidant activities of the plant alcohol extract, CHCl 3 fraction, EtOAc fraction and isolates were studied.

Keywords: Chenopodium ambrosioides ; scutellarein-7-O-α-rhamnopyranosyl-(1→2)-α-rhamnopyranosyl-(1→2)-α- rhamnopyranoside; scutellarein-7-O-α-rhamnopyranosyl-(1→2)-α-rhamnopyranoside; flavone glycoside; Antioxidant. . © 2014 ACG Publications. All rights reserved.