STRUCTURE DETERMINATION OF KOREPIMEDOSIDE A AND KOREPIMEDOSIDE B FROM EPIMEDIUM KOREANUM NAKAI

Two new flavonol glycosides were isolated from the aerial parts of Epimedium koreanum Nakai. On the basis of spectroscopic and chemical evidence, they were elucidated as anhydroicaritin 3-O-β-D-(6-acetyl) glucopyranosyl (1→3)-α-L-(4-acetyl) rhamnopyranoside and anhydroicaritin 3-O-β-D- (2,6 diacetyl) glucopyranosyl (1→3)-α-L-(4-acetyl) rhamnopyranoside-7-O-β-D-glucopyranoside, which were named korepimedoside A and korepimedoside B respectively .