Three New Isoflavonoid Glycosides from Lupinus luteus and L. polyphyllus×arboreus

Abstract

As part of our studies on leguminous plants, we examined the ingredients of Lupinus luteus L. and L. polyphyllus×arboreus hybrid, and three new isoflavonoid glycosides together with six known ones were isolated. They were determined to be 8-C-glucopyranosylgenistein 4'-O-glucopyranoside (1), 5-O-methylgenistein 4', 7-di-O-glucopyranoside (2), 2'-hydroxygenistein 4', 7-di-O-glucopyranoside (3) by spectroscopic and chemical methods. It was also shown that the isoflavonoid distributions in the two species were differed.