A benzoic acid ester from Uvaria narum

Virinder S. Parmar*, Kirpal S. Bisht, Abha Malhotra, Amitabh Jha, William Errington, Oliver W. Howarth, Om D. Tyagi, Paul C. Stein, Soren Jensen, Per M. Boll, Carl E. Olsen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review


A new benzoic acid ester, 2-E-[2″-oxo-cyclopent-3″-en-1″-ylidene]ethyl benzoate, together with tritriacontane, tetratriacontanol and β-sitosterol have been isolated from a petrol extract of the leaves of Uvaria narum. The structure of the new ester has been established on the basis of spectral data and finally confirmed by X-ray crystallography. Glut-5(6)-en-3-ol and betulapren-11-ol have also been isolated from a petrol extract of the leaves and stems of U. hookeri; this is the first report of the isolation of the latter compound from the genus Uvaria.

Original languageEnglish
Issue number4
Pages (from-to)951-955
Number of pages5
Publication statusPublished - 1. Jan 1995


  • 2-E-[2″-oxo-cyclopent-3″-en-1″-ylidene]ethyl benzoate
  • Annonaceae
  • betulapren-11-ol
  • glut-5(6)-en-3-ol
  • U. hookeri
  • Uvaria narum
  • X-ray crystal structure

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