Study on the constituents of Desmodium styracifolium.

Abstract
Two triterpenoid saponins (1 and 2) were isolated from Desmodii Herba [the dried whole plants of Desmodium styracifolium (OSBECK) MERR. (Leguminosae)] and their chemical structures were characterized as soyasponin I and a new saponin, 3-O-[.alpha.-L-rhamnopyranosyl-(1 .fwdarw. 2)-.beta.-D-galactopyranosyl-(1 .fwdarw. 2)-.beta.-D-glucuronopyraosyl]soyaspogenol E, respectively, by chemical and spectroscopic means.

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