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Steroidal glycosides from Tribulus terrestris

G Wu1, S Jiang, F Jiang

  • 1Department of Phytochemistry, Shanghai Institute of Materia Medica, P.R. China.

Phytochemistry
|August 1, 1996
PubMed
Summary

Two novel steroidal saponins were identified in Tribulus terrestris L. aerial parts, expanding knowledge of its phytochemistry and potential bioactive compounds.

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Area of Science:

  • Phytochemistry
  • Natural Products Chemistry
  • Organic Chemistry

Background:

  • Tribulus terrestris L. is a medicinal plant with a history of traditional use.
  • Steroidal saponins are a class of compounds found in plants, known for diverse biological activities.
  • Previous research has identified various saponins in Tribulus terrestris.

Purpose of the Study:

  • To isolate and characterize new steroidal saponins from the aerial parts of Tribulus terrestris L.
  • To elucidate the chemical structures of these novel compounds using advanced spectroscopic methods.

Main Methods:

  • Extraction of compounds from Tribulus terrestris aerial parts.
  • Isolation and purification of steroidal saponins using chromatographic techniques.
  • Structure elucidation employing 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy and Mass Spectrometry.

Main Results:

  • Isolation of one known saponin, hecogenin 3-O-beta-D-glucopyranosyl(1-->4)-beta-D-galactopyranoside.
  • Characterization of two new steroidal saponins: 26-O-beta-D-glucopyranosyl-3-O-[-beta-D-xylopyranosyl(1-->3)--beta-D-galactopyranosyl(1-->2)--beta-D-glucopyranosyl (1-->4)-beta-D-glucopyranosyl]-5 alpha-furost-20(22)-en-12-one-3 beta,26-diol and 26-O-beta-D-glucopyranosyl-3-O-[{beta-D-xylopyranosyl (1-->3)--beta-D-galactopyranosyl(1-->2)--beta-D-glucopyranosyl(1 -->4)-beta-D-glucopyranosyl]-5 alpha-furostan-12-one-3 beta,22,26-triol.
  • Confirmation of structures through comprehensive spectroscopic analysis, particularly 2D NMR.

Conclusions:

  • The study successfully identified and characterized two previously unknown steroidal saponins from Tribulus terrestris.
  • These findings contribute to the understanding of the chemical diversity of Tribulus terrestris and may provide a basis for further pharmacological investigations.

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