A New Biologically Active Triterpenoid Saponin from the Leaves of Lepidagathis hyalina nees

Abstract

Abstract A new biologically active triterpenoid saponin m.f. C42H68O13, m.p. 315[ddot]-317°C was isolated from the ethyl acetate soluble fraction of the methanolic extract of the leaves of Lepidagathis hyalina. Its structure was characterized as 3-β-O-[α-L-rhamnopyranosyl(1→4)O-β-D-glucopyranosyl]16-α-hydroxy-olean-12-en(13)-28-oic acid by several spectral and chemical analysis. This new triterpenoid saponin showed antimicrobial activity against various plants pathogenic bacteria and fungi.