Steroidal saponins from the aerial parts of Tribulus alatus Del

Phytochemistry. 2006 May;67(10):1011-8. doi: 10.1016/j.phytochem.2006.03.007. Epub 2006 May 2.


Six steroidal glycosides (1-6) were isolated from the aerial parts of Tribulus alatus Del. (Zygophyllaceae), together with one known cholestane, one spirostane, and six flavonol glycosides. Among them, 1 and 2 possess a furostane-type aglycone, 3 and 6 a cholestane structure, and 4 and 5 a spirostane skeleton. Their structural elucidation was accomplished by extensive spectroscopic methods including 1D ((1)H, (13)C, (13)C DEPT, TOCSY, ROESY) and 2D NMR experiments (DQF-COSY, HSQC, HMBC) as well as ESI-MS analysis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Nuclear Magnetic Resonance, Biomolecular
  • Plant Components, Aerial / chemistry
  • Saponins / chemistry*
  • Saponins / isolation & purification
  • Spectrometry, Mass, Electrospray Ionization
  • Steroids / chemistry*
  • Steroids / isolation & purification
  • Tribulus / chemistry*


  • Saponins
  • Steroids