Abstract
Two new lupane type saponins, along with one known saponin were isolated from leaves of Oplopanax horridus (Devil's Club). The structures of the two new compounds were elucidated as 3alpha-hydroxy-lup-20(29)-ene-23, 28-dioic acid-3-O-beta-D-glucopyranoside (2) and 24-nor-3-oxo-lup-20(29)-en-28-oic acid-28-O-alpha-L-rhamnopyranosyl(1''' --> 4")-beta-D-glucopyranosyl(1" --> 6')-beta-D-glucopyranoside (3) on the basis of spectroscopic analysis and chemical evidence. The known compound was identified as 3alpha-hydroxy-lup-20(29)-ene-23, 28-dioic acid (1) by comparison of its spectral data with those reported. Compound 1 was isolated for the first time from the title plant.
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