Two New Triterpene Saponins from Acanthophyllum laxiusculum

Two new triterpene glycosides, 1 and 2 , together with three known ones, were isolated from roots of Acanthophyllum laxiusculum Schiman ‐ Czeika . The structures of the new compounds were established by extensive 1D‐ and 2D‐NMR spectroscopic experiments and MS analyses as 23‐ O ‐ β ‐ D ‐galactopyranosylgypsogenic acid 28‐ O ‐{ β ‐ D ‐glucopyranosyl‐(1→2)‐6‐ O ‐[4‐carboxy‐3‐hydroxy‐3‐methyl‐1‐oxobutyl]‐ β ‐ D ‐glucopyranosyl‐(1→6)}‐[ β ‐ D ‐glucopyranosyl‐(1→3)]‐ β ‐ D ‐galactopyranosyl ester ( 1 ) and gypsogenic acid 28‐ O ‐{ β ‐ D ‐glucopyranosyl‐(1→2)‐6‐ O ‐[4‐carboxy‐3‐hydroxy‐3‐methyl‐1‐oxobutyl]‐ β ‐ D ‐glucopyranosyl‐(1→6)}‐[ β ‐ D ‐glucopyranosyl‐(1→3)]‐ β ‐ D ‐galactopyranosyl ester ( 2 ).