Triterpenoid Saponins from Astragalus corniculatus

Abstract

Abstract Two new triterpenoid saponins were isolated from the ethanolic extract of the aerial parts of Astragalus corniculatus Bieb. The structures of the saponins were elucidated as 3β -O-[O-4-oxopentopyranosyl-( 1 → 2)-β -D-glucopyranosyl]-21α-hydroxyolean-12-ene-28-oic acid (1) and 21α- hydroxyolean-12-ene-28-oic acid 3β -4-oxo-pentopyranoside (2) by chemical and spectral methods.