A new flavonol glycoside from the aerial parts of Astragalus vulneraria

Abstract

A new flavonol glycoside, isorhamnetin 3-O-β-D-apiofuranosyl-(1→2)-[α-L-rhamnopyranosyl-(1→6)]- β-D-galactopyranoside, and the known diglycoside, isorhamnetin 3-O-α-L-rhamnopyranosyl-(1→6)-β-D-galactopyranoside were isolated from the aerial parts of Astragalus vulneraria. Characterization of the two compounds was done by spectroscopic methods (1D and 2D NMR, and FAB-MS).