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  • Title: Two new furostanol saponins from Tribulus terrestris.
    Author: Xu YJ, Xu TH, Zhou HO, Li B, Xie SX, Si YS, Liu Y, Liu TH, Xu DM.
    Journal: J Asian Nat Prod Res; 2010 May; 12(5):349-54. PubMed ID: 20496191.
    Abstract:
    Two new furostanol saponins were isolated from the fruits of Tribulus terrestris L. Their structures were established as 26-O-beta-D-glucopyranosyl-(25S)-5alpha-furost-20(22)-en-3beta,26-diol-3-O-alpha-L-rhamnopyranosyl-(1 --> 2)-[beta-D-glucopyranosyl-(1 --> 4)]-beta-D-galactopyranoside (1) and 26-O-beta-D-glucopyranosyl-(25S)-5alpha-furost-20(22)-en-12-one-3beta,26-diol-3-O-beta-D-galactopyranosyl-(1 --> 2)-beta-D-glucopyranosyl-(1 --> 4)-beta-D-galactopyranoside (2) on the basis of spectroscopic data as well as chemical evidence.
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