Steroidal saponins from the aerial parts of Tribulus alatus Del.

Abeer Temraz, Omayma D. El Gindi, Hazem A. Kadry, Nunziatina De Tommasi, Alessandra Braca

Research output: Contribution to journalJournal articlepeer-review

31 Scopus citations

Abstract

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 (1H, 13C, 13C DEPT, TOCSY, ROESY) and 2D NMR experiments (DQF-COSY, HSQC, HMBC) as well as ESI-MS analysis.

Original languageEnglish
Pages (from-to)1011-1018
Number of pages8
JournalPhytochemistry
Volume67
Issue number10
DOIs
StatePublished - May 2006
Externally publishedYes

Keywords

  • Cholestane saponins
  • Furostane saponins
  • Spirostane saponins
  • Tribulus alatus
  • Zygophyllaceae

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