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Three triterpenoidal saponins, saikosaponin v-l(1), 6″-O-acetyl-saikosaponin b2 (2) and 6"-O acetyl-saikosaponin d(3) were isolated from the roots of the title plant and the structures were identified on the basis of spectral analysis. Saikosaponin v-1 is a new compound, which was identified as 3β,16α,23,28-tetrahydroxy-olean-ll,13(18)-dien-30-oic acid-3-O-β-D-glucopyra nosyl-(1 → 3)-β-D-fucopyranosyl-30-O-xylitol ester.