A new isoflavone isolated from Harpalyce brasiliana

Abstract

A new isoflavone named harpalycine and quercetin were isolated from the leaves and 3-hydroxy-4-isopentenyl-8,9-methyle-nedioxypterocarpan and betulinic acid from the roots of Harpalyce brasiliana. The structures were elucidated using spectroscopic methods, including 2D NMR techniques of the new isoflavone.

Keywords

• Harpalyce brasiliana
• Leguminosae
• flavonoids
• triterpene