Flavonóides glicosilados das folhas e flores de Bauhinia forficata (Leguminosae)

Abstract

From the leaves of Bauhinia forficata kaempferol and four flavonoid glycosides, 3,7-di-O-α-L-rhamnopyranosylkaempferol, 3,7-di-O-α-L- rhamnopyranosylquercetin, 3-O-[α-L-rhamnopyranosyl-(1→6)-β-D- glucopyranosyl]-7-O-α-L-rhamnopyranosylkaempferol and 3-O-[α-L- rhamnopyranosyl-(1-→6)-β-D-glucopyranosyl]-7-O-α-L- rhamnopyranosylquercetin were obtained. From the flowers only the flavonoid 7-O-α-L-rhamnopyranosyIkaempferol was isolated. The structures were established by chemical and spectroscopic methods.