A new furostanol glycoside from tribulus terrestris

Abstract

Besides two known glycosides, a new furostanol glycoside was isolated from the Fruits of Tribulus terrestris L. The structure of the new furostanol glycoside was established as 26-O-β-D-glucopyranosyl-(25S)-5a-furostane- 20(22)-en-12-one-3β, 26-diol- 3-O-α-L-rhamnopyranosyl-(1→2)- [β-D-glucopyranosyl-(1→4)]-β-D-galactopyranoside (1) on the basis of 1D and 2D-NMR techniques, including COSY, HMBC, and HMQC correlations. © 2010 by the authors.