The Leaf Essential Oils of the Genus Syncarpia Ten. (Myrtaceae)

✍ Scribed by Joseph J. Brophy; Robert J. Goldsack; Anthony R. Bean; Paul I. Forster; Christopher J. R. Fookes

• Publisher: John Wiley and Sons
• Year: 1996
• Tongue: English
• Weight: 405 KB
• Volume: 11
• Category: Article
• ISSN: 0882-5734
• DOI: 10.1002/(sici)1099-1026(199611)11:6<361::aid-ffj591>3.0.co;2-t

✦ Synopsis

The leaf essential oils of the three species of Syncurpiu Ten. have been investigated. S. glomulifera (Sm.) Nied. subsp. glomulifera, S. glomulifera subsp. glabra (Benth.) A. R. Bean and S. verecunda A. R. Bean produced oils in 0.144% yield based on fresh leaves, in which the major compound was a-pinene (30-50%), while S. glomulifera subsp. glubru also showed significant amounts of a-thujene (11-27%). The major sesquiterpenes were aromadendrene (1-13%) and globulol(3-8%). The essential oil of S. hillii F. M. Bailey (obtained in 0.2-1.0% yield) was dominated by two tetrahydro-2Hchromen derivatives, hillyl acetate (7-acetoxy-2,2,6,6,8,8-hexamethyl-5oxo-5,6,7,8-tetrahydro-2H-chromen) (53430Y0) and hillone (5,7-dioxo-2,2,6,6,8,8-hexamethyl-5,6,7,8-tetrahydro-2H-chromen) (6-12%). These were accompanied by a range of mono-and sesquiterpenes, usually in small amounts, of which the largest contributor was a-pinene (2-22%).