A New Furost—20（22）—ene Oligoglycoside from Asparagus cochinchinensis

A new furost-20(22)-ene oligoglycoside named as aspacochioside C was isolated from the roots of Asparagus cochinchinensis (Lour.) Merr.. Its structure was elucidated to be 26-O-β- D-glucopyranosyl-(25S)-5β-furost-20(22)-en-3α,26-diol-3-O-α-L-rhamnopyranosyl-(1→4)-β-D- glucopyranoside on the basis of spectroscopic techniques including 1D and 2D NMR experiments.