[The chemical constituents of Epimedium koreanum Nakai].

Three new compounds were isolated from the aerial part of Epimedium koreanum Nakai. On the basis of spectroscopic and chemical evidences, they were elucidated as 3-O-beta-D-glucopyranosyl(1-->3)-alpha-L-(4-acetyl) rhamnopyranoside-anhydroicaritin-7-O-beta-D-glucopyranoside, 2-(p-hydroxyphenoxy)-5, 7-dihydroxy-6-prenylchromone, and 7-hydroxy-3, 4, 6-trimethoxy-9, 10-dihydrophenanthrene-2-O-beta-D-glucopyranoside.