Acylated apigenin glycosides from alfalfa (Medicago sativa L.) var. Artal

Three flavones, including 4'-O-[2'-O-E-feruloyl-O-beta -D-glucuronopyranosy l(1-->2)-O-beta -D-glucuronopyranoside]apigenin, 7-O-beta -D-glucuronopyran osyl-4'-O-[2'-O-E-feruloyl-O-beta -D-glucuronopyranosyl(1-->2)-O-beta -D-gl ucuronopyranoside]apigenin and 7-O-beta -D-glucuronopyranosyl-4'-O-[2'-O p- E-coumaroyl-O-beta -D-glucuronopyranosyl(1-->2)-O-beta -D-glucuronopyranosi de]apigetun have been identified in alfalfa var. Artal. The known flavone 7 -O-{2-O-E-feruloyl-[beta -D-glucuronopyranosyl(1-->3)]-O-beta -D-glucuronop yranosyl (1-->2)-O-beta -D-glucurono-pyranoside} apigenin was also isolated . The structures of these compounds were deduced on the basis of their spec tral data. (C) 2001 Elsevier Science Ltd. All rights reserved.