Studies on the constituents of apocynaceae plants. Gas chromatography-mass spectrometric determination of new flavonoid triglycosides from the leaves of Cerbera manghas L.

Abstract

Two new flavonol triglycosides, named manghaslin (I) and clitorin (II), were isolated from the leaves of Cerbera manghas L. (Apocynaceae). The structures of I and II were elucidated as quercetin-3-O-L-rhamnosyl-(1→2)-O-[L-rhamnosyl-(1→6)] D-glucoside (I) and kaempferol-3-O-L-rhamnosyl-(1→2)-O-[L-rhamnosyl-(1→6)] D-glucoside (II), respectively, by chemical and gas chromatography-mass spectrometric studies.