Studies on the Constituents of Solanaceous Plants, Steroidal Glycosides from Solanum nodiflorum

Abstract

Our search for bioactive steroidal glycosides among solanaceous plants has led to the isolation and characterization of four new glycosides, β-chacotriosyl (25R, 26R)-spirost-5-ene-3β, 17α, 26-triol (1), the 26-O-methyl derivative (2) of 1, 3-O-α-L-rhamnopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→3)] β-D-glucopyranoyl (25R, 26R)-26-O-methyl-spirost-5-ene-3β, 17α, 26- triol (3) and β-chacotriosyl (22ψ, 25R)-furost-5-ene-3β, 17α, 22, 26-tetraol 26-O-β-D-glucopyranoside (4) from the fruits of Solanum nodiflorum.