Two new flavonoid diglycosides from Cephalotaxus sinensis

Two new acetylated flavonoid diglycosides, scutellarein-5-O-[alpha-L-rhamnopyranosyl-(1 -> 4)-beta-D-6-O-acetylglucopyranoside] (1), apigenin-5-O-[alpha-L-rhamnopyranosyl-(l -> 2)-beta-D-3,6-di-O-acetylglucopyranoside] (2), were isolated from the leaves of Cephalotams sinensis. Their structures were determined by chemical and spectroscopic methods including HR-FAB-MS, (H-1H)-H-1 COSY, HSQC and FDv1BC experiments. (C) 2007 Yu Hong Yu. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.