Triterpenoids saponins from Berneuxia thebetica
1998
Wang, M.K. | Cai, H. | Peng, S.L. | Ding, L.S. | Wu, F.E. | Chen, Y.Z.
Four triterpenoid saponins were isolated from Berneuxia thibetica. On the basis of chemical and spectroscopic evidence, three new saponins, berneuxia saponins A, B and C, were elucidated as 21-tigloylbarringtogenol C-3 beta-O-alpha-L-rhamnopyranosyl(1 leads to 2)-beta-D-galactopyranosyl(1 leads to 3)[beta-D-glucopyranosyl (1 leads to 2)-beta-D-glucuronopyranoside]. 28-tigloylbarringtogenol C-3 beta-O-alpha-L-rhamnopyranosyl(1 leads to 2)-beta-D-galactopyranosyl(1 leads to 3)[beta-D-glucopyranosyl(1 leads to 2)-beta-D-glucuronopyranoside] and 16 alpha-28-dihydroxyolean-12- en-21-one-3-O-alpha-L-rhamnopyranosyl(1 leads to 2)-beta-D-galactopyranosyl(1 leads to 3)[beta-D-glucopyranosyl (1 leads to 2)-beta-D-glucuronopyranoside]. The known saponin was desacyl jegosaponin.
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