Some Isoflavones from the Root of Caragana microphylla Lam

골담초의 이소후라본 성분

Five isoflavones were isolated from the root of Caragana microphylla Lam. and the structures have been identified by means of chemical and physical methods. The isoflavones are 7-hydroxy-4'-methoxyisoflavone(formononetin), $form ononetin-7-O-{\beta}-glucoside(ononin)$, 7-hydroxy-3', 4'-methylenedioxyisoflavone(pseudobaptigenin), $7-O-{\beta}-glucuopyranosyloxy-3'- hydroxy-4'-methoxyisoflavone(calycosin-7-O-{\beta}-gluc-oside)$ and maackiain.