Triterpenoid Saponins from the Stem Bark of Xeromphis nilotica (Rubiaceae)
Journal: Journal of Medicinal and Chemical Sciences (Vol.1, No. 2)Publication Date: 2018-10-01
Authors : Ibrahim Abdurrahman Adam; Iman Omer; Hu Yu-Lai;
Page : 41-44
Keywords : Xeromphis nilotica; Triterpene saponines; Structural elucidation; Chemical evidence;
Abstract
Two new triterpenoid saponins, named, 3-O-β-D-glucopyranosyl (1→3)-Olean-12-ene-19, 23-diol 1 and 3-O-{O-α-L-rhamno-pyranosyl-(1→3)-O-[-O-β-D-glucopyranosyl-(1→3)]-β-D-gluco-pyranosyl}-pomolic acid were isolated from the stem bark of Xeromphis nilotica through extensive chromatographic technique [TLC and CC] and their structures were elucidated on the basis of their spectral data [1D, 2D NMR and HR-ESI-MS] and chemical evidence.
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