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[Isolation and structure elucidation of cirensenosides Q and R]
G Wang1, J Xu, T Murayama
1Norman Bethune University of Medical Sciences, Changchun.
Abstract:
Two new saponins (cirensenoside Q and R) were isolated from the leaves of Oplopanax elatus. Their structures were elucidated as follows: Q, gypsogenin 3-O-beta-glucopyranosyl-28-O-alpha-L-rhamnopyranosyl(1-->4)-beta-D- glucopyranosyl(1-->6)-beta-D-glucopyranoside; R, 3 beta-hydroxylup-20(29)-ene-23-al-28-oic acid 3-O-beta-D-glucopyranosyl-28-O-alpha-L-rhamnopyranosyl(1-->4)-beta-D- glucopyranosyl(1-->6)-beta-D-glucopyranoside, respectively.