JOURNAL of the Tunisian Chemical Society

serving the Research, the Education and the Industry

GC, GC-MS and NMR spectroscopy Integrated Analysis of the Tunisian Pulicaria laciniata essential oil

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The essential oils from aerial parts and roots of Pulicaria laciniata were obtained by hydro distillation and analyzed by GC and GC-MS. The chemical composition of the root oil of this species is reported here for the first time. Thirty-eight components, accounting for 98.25% and 98.79% of the aerial part and root oils, respectively, were identified. The two oils were characterized by high proportion of oxygenated monoterpenes (68.46 and 85.91%) and belonged to the geranyl isobutyrate (55.91 and 77.92%) chemotype. The phenolic derivatives represented the second major fraction (17.22 and 4.85%) among which cis-isoelemicin (11.04 and 4.85%) was the predominant compound. The major constituent was isolated and identified as (Z)-geranyl isobutyrate 1, by analysis of spectroscopic data (1H-NMR, 13C-NMR, DEPT 135, CHcorr, HMBC, 1H1H COSY and NOESY experiments).

H. Ghouila, F. Hichri, L. Ghribi, S. Barrek, H. Ben Jannet

Essential oil, Pulicaria laciniata, Asteraceae, (Z)-geranyl isobutyrate, 1 and 2D-NMR

Pages: 139-144

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