In addition to solamargine, two new steroid alkaloid glycosides, anguivine and isoanguivine, have been isolated from the roots of Solanum anguivi, the structures of which have been elucidated as (25R)-3 beta-{O-alpha-L-rhamnopyranosyl-(1-->2)-O-[beta-D-xylopyranosyl-(1-->3)]-beta-D-glucopyranosyloxy}-22 alpha N-spirosol-5-ene and (25R)-3 beta-{O-alpha-L-rhamnopyranosyl-(1-->2)-O-[beta-D-xylopryanosyl-(1-->3)-beta-beta-D-galactopyranosyloxyl}-22 alpha N-spirosol-5-ene.