1. Enantiomeric composition of the principal components of the oil of Melaleuca alternifolia
- Author
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S Grant Wyllie, David N Leach, John G Hall, and Ilias Kyratzis
- Subjects
Chromatography ,biology ,Chemistry ,Monoterpene ,Enantioselective synthesis ,Melaleuca alternifolia ,General Chemistry ,biology.organism_classification ,law.invention ,law ,Reagent ,Proton NMR ,Gas chromatography ,Enantiomer ,General Agricultural and Biological Sciences ,Essential oil - Abstract
The concentrations and enantiomeric purity of the major monoterpene constituents in a number of Melaleuca alternifolia (tea tree) oils have been determined by enantioselective gas chromatography. Consrstent enantiomeric ratios of 65:35 (+:-) for terpinen-4-ol and 76:24 (+:-) for a-terpineol were observed for the range of oils analyzed. Attempts to validate these ratios in the intact oil by 1 H NMR together with chiral lanthanide shift reagents have not yet been successful. 1 H NMR was, however, successful in confirming the enantiomeric purity determined by gas chromatography of standard terpinen4-ol [79:21 (+:-)] and α-terpineol [35:65 (+:-)] samples
- Published
- 1993
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