Three New Natural Compounds from the Root Bark Essential Oil from Xylopia aethiopica
Article first published online: 14 MAY 2012
Copyright © 2012 John Wiley & Sons, Ltd.
Volume 23, Issue 6, pages 651–656, November/December 2012
How to Cite
Yapi, T. A., Boti, J. B., Attioua, B. K., Ahibo, A. C., Bighelli, A., Casanova, J. and Tomi, F. (2012), Three New Natural Compounds from the Root Bark Essential Oil from Xylopia aethiopica. Phytochem. Anal., 23: 651–656. doi: 10.1002/pca.2369
- Issue published online: 13 OCT 2012
- Article first published online: 14 MAY 2012
- Manuscript Accepted: 7 APR 2012
- Manuscript Revised: 2 APR 2012
- Manuscript Received: 13 FEB 2012
- structure elucidation;
- root bark oil;
- Xylopia aethiopica
In the course of on-going work on the characterisation of aromatic plants from the Ivory Coast we investigated the composition of the root oil from Xylopia aethiopica.
The aim of this work was to investigate the chemical composition of X. aethiopica root oil and elucidate the structure of two new compounds.
Analysis of the essential oil was carried out using a combination of chromatographic (CC, GC with retention indices) and spectroscopic techniques (MS, 13C-NMR, 2D-NMR).
Twenty seven components, accounting for 95.6% of the whole composition, were identified including various compounds for which spectroscopic data were absent on commercial computerised MS libraries. Three compounds are reported for the first time as natural compounds and the structure of two new compounds, 4,4-dimethyl-2-vinylcyclohexene and endo-5-methoxy-3-patchoulene, has been elucidated using extensive two-dimensional NMR spectroscopy.
The composition of X. aethiopica root oil is dominated by two dimethylvinylcyclohexene isomers. It differs drastically from the composition of leaf and fruit oils of the same plant. The combination of analytical techniques appeared crucial for a fruitful analysis. Copyright © 2012 John Wiley & Sons, Ltd.