Antisweet Natural Products. XII. Structures of Sitakisosides XI-XX from Stephanotis Lutchuensis Koidz. Var. Japonica

Overview

Journal Chem Pharm Bull (Tokyo)

Specialties Chemistry
Pharmacology

Date 1997 Jan 1

PMID 9023968

Citations 4

Authors

K Yoshikawa

A Mizutani

Y Kan

S Arihara

Affiliations

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Abstract

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-beta-D-xylopyranosyl(1 --> 6)-beta-D-glucopyranosyl(1 --> 6)- beta-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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