Isoflavones of the roots of Lupinus luteus

Conclusions

For the first time in the isoflavone series, a compound which has the structure of 5,7-dihydroxy-3′,4′-methylenedioxyisoflavone (3′,4′-methylenedioxyorobol) and two of its glucosides — 3′,4′-methylenedioxyorobol 7-O-β-D-glucoside and 3′,4′-methylenedioxyorobol 7-O-β-D-glucosylglucoside — and also a genistein C-monoglucoside, have been described. The isoflavones were isolated from the roots ofLupinus luteus L. by preparative chromatography on paper and on columns of polyamide. In addition, the previously known genistein, genistein 7-O-β-D-glucoside (genistin), and genistein 7-O-β-D-glucosylglucoside have been obtained.