JOURNAL of the Tunisian Chemical Society

The chemical composition and antioxidant effects of extracts from Washingtonia filifera leaves and flowers were studied. Antioxidant testing assay has been done on the basis of 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assay. Among all tested extracts and the volatile fractions, butanol and ethanol ones from Washingtonia filifera leaves and flowers, were the most potent ones, the observed results indicate that they may be considered as a natural source of antioxidants having health protective potential. Chemical investigation of these extracts, led to the isolation and the identification of Tricine acetylated derivative 1a and of synthetic heterocyclic bioactive Quinazoline-2, 4-(1H, 3H) dione 2 mentioned for the first time in Washingtonia filifera (W.H). Structures were assigned on the basis of spectroscopic data, especially (¹H and ¹³C) 1 and 2D NMR and ES Mass spectrometry.

S. Hammami, S. Ben Salem, H. Jarraya, P. Devi, A. Nefzi, Z. Mighri

Washingtonia filifera (W.H), antioxidant effects, Tricine triacetates, Quinazoline-2, 4-(1H, 3H) dione

Pages 133-137