Y. Mimaki et al., 2 NEW BISDESMOSIDIC STEROIDAL SAPONINS FROM THE UNDERGROUND PARTS OF RUSCUS-ACULEATUS, Chemical and Pharmaceutical Bulletin, 46(5), 1998, pp. 879-881
Two new bisdesmosidic spirostanol saponins were isolated from the unde
rground parts of Ruscus aculeatus. Their structures were determined to
be (23S)-spirosta-5,25(27)-diene-1 beta,3 beta,23-triol 1-O-(O-beta-D
-glucopyranosyl-(1 --> 3)-O-alpha-L-rhamnopyranosyl-(1 --> 2)-alpha-L-
arabinopyranosyl) 23-O-beta-D-glucopyranoside and (23S)-spirosta-5,25(
27)-diene-1 beta,3 beta,23-triol 1-O-(O-alpha-L-rhamnopyranosyl-(1 -->
2)-alpha-L-arabinopyranosyl) 23-O-beta-D-glucopyranoside on the basis
of spectroscopic analysis, including two-dimensional NMR techniques,
and the result of hydrolysis.