Structure Elucidation of a New Saponin from Tribulus Terrestris L. Using High-field Gradient NMR Techniques

Abstract

Abstract: A new saponin was isolated from Thoulus terrestris L..By means of a series of 2DgradientNMRtechniques, including 1D gradient selective TOCSYand GEOSY, 2D gradient-COSY, NOESY,TOCSY, HSQC, HSQC-TOCSY, the structure of the saponin was elucidated as 26-O-β-D-glucopyra-nosyl-22-methoxy-furostane-3-O-{β-D-xyloPyranosyl-(1→3)-[β-D-xylopyranosyl-(1→2)-β-D-glucopy-ranosyl-(1→4)}-[α-L-rhamnopyranosyl-(1→2)]-β-D-galactopyranoside.

Key words: Terrestroneoside, 1D TOCSY, 1D GOESY, Sensitivity enhanced HSQC, HSQC-TOCSY

CLC Number:

O657

TrendMD:

TU Guang-Zhong, MA Li-Bin, LI Xi-Lai, AN Dong-Ge, SUN Wen-Ji, GUO Zun-Wu, GAO Jin. Structure Elucidation of a New Saponin from Tribulus Terrestris L. Using High-field Gradient NMR Techniques[J]. Chem. J. Chinese Universities, 2002, 23(4): 600.

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Structure Elucidation of a New Saponin from Tribulus Terrestris L. Using High-field Gradient NMR Techniques

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