Isoflavonoids of the bark of Dipteryx odorata Willd. (Aubl.)

Abstract

The two new isoflavones, dipteryxine and odoratine, isolated from the bark of Dipteryx odorata Willd. (Aubl.), have been established as 5,6-dimethoxy-7-hydroxy-3′,4′-methylenedioxyisoflavone (1a) and 3′,4′-methylenedioxy-5,6,7-trimethoxyisoflavone (1b), respectively, by means of spectroscopic as well as chemical evidence, and by synthesis.