A Steroidal Glycoside from Cynanchum versicolor Bunge

摘要

A new C21 steroidal glycoside,named cynanversicoside F (1),was isolated from the root of Cynanchum versicolor Bunge. Its structure was established as glaucogenin-A 3-O-β-D-digitoxopyranosyl-(1→4)-β-D-cymaropyranoside by spectroscopic and chemical methods.