STEROIDAL ALKALOID GLYCOSIDES FROM SOLANUM-UPORO

In addition to solamargine, anguivine and isoanguivine, two new steroi dal alkaloid glycosides, (23S)-23-hydroxyanguivine and (23S)-23-hydrox yisoanguivine, have been isolated from roots of Solanum uporo, the str uctures of which have been assigned by comparison with literature data as (23S,25R)-3 beta-{O-alpha-L-rhamnopyranosyl-(1 --> 2)-O-[beta-D-xy lopyranosyl-(1 --> 3)]-beta-D-glucopyranosyloxy}-22 alpha N-spirosol-5 -en-23-ol and (23S,25R)-3 beta-{O-alpha-L-rhamnopyranosy1-(1 --> 2)-O- [beta-D-xylopyranosyl-(1 --> 3)]-beta-D-galactopyranosyloxy}-22 alpha N-spirosol-5-en-23-ol. Copyright (C) 1997 Elsevier Science Ltd.