Chemical and Pharmaceutical Bulletin p. 62 - 67 (1997)
Update date:2022-08-16
Topics:
Yoshikawa, Kazuko
Mizutani, Aki
Kan, Yukiko
Arihara, Shigenobu
From the fresh stem of Stephanotis lutchuensis var. japonica, ten new oleanane-type triterpenoid glycosides, named sitakisosides XI-XX (1-10), were isolated. Their structures were determined on the basis of spectroscopic data and chemical evidence. The results show that all have a 3-O-β-D- xylopyranosyl(1→6)-β-D-glucopyranosyl(1→6)-β-D-glucopyranosyl moiety and the aglycones of sitakisosides XI-XV, XVI and XVII, XVIII and XIX, and XX are sitakisogenin, chichipegenin, marsglobiferin and longispinogenin, respectively, Sitakisosides XI-XIII, XVI and XVIII, having an acyl group, showed antisweet activity.
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