Abstract
The steroid glycosides in the fresh whole plants of Heloniopsis orientalis (THUNB.) C. TANAKA were examined and the following four steroid saponins were isolated and identified : pennogenin 3-O-rhamnosyl-chacotrioside (II) ; methyl proto-dioscin ; 26-O-β-D-glucopyranosyl-25D-furost-5-ene-3β, 17α, 22, 26-tetraol 3-O-rhamnosyl-chacotrioside (III) (the proto-type compound of II) ; 26-O-β-D-glucopyranosyl-17 (20)-dehydrokryptogenin 3-O-rhamnosyl-chacotrioside (VI) (an artefact produced from III). III is the second furostanol 3, 26-O-bisglycoside corresponding to a coexisting pennogenin 3-O-glycoside and could be regarded as a nolonin.
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