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Natural Product Research Part A
Year: 2010  |  Volume: 24  |  Issue: 20  |  Page No.: 1877 - 1882

Separation and identification of a new saponin from the flowers of Guaiacum officinaleL.

Nikhat Saba, Viqar Uddin Ahmad, Zulfiqar Ali and Khalid Mohammed Khan    

Abstract: A triterpenoid saponin, guaianin O (1), oleanolic acid 3-O-lcubagr-L-rhamnopyranosyl-(1 → 2)-[β-D-glucopyranosyl-(1 → 3)]-agr-L-arabinopyranosidercub-28- O-[β-D-glucopyranosyl]-ester, was isolated from the n-butanol extract of flowers of Guaiacum officinale L. The structural elucidation of 1 was accomplished by extensive studies of both one and two dimensional 1H, 13C-NMR spectra, the FAB mass spectrum, and alkaline and acid hydrolyses.

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