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Leaf essential oils of the genus Leptospermum (Myrtaceae) in eastern Australia. Part 5. Leptospermum continentale and allies
Author(s) -
Brophy Joseph J.,
Goldsack Robert J.,
Bean Anthony R.,
Forster Paul I.,
Lepschi Brendan J.
Publication year - 1999
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/(sici)1099-1026(199903/04)14:2<98::aid-ffj797>3.0.co;2-v
Subject(s) - chemotype , nerolidol , sesquiterpene , botany , farnesol , essential oil , chemistry , terpene , myrtaceae , stereochemistry , biology , organic chemistry , linalool
The essential oils of a series of Leptospermum species belonging to Group 8 of our classification have been examined. L. micromyrtus Miq., L. minutifolium C.T. White, one chemotype of L. myrtifolium Sieber ex DC., L. rupestre Hook. f., and L. sejunctum Joy Thomps. produced oils rich in sesquiterpenes, α‐, β‐ and γ‐eudesmol being the most significant compounds. L. myrtifolium existed in two chemotypes, the second of which contained ( E , Z )‐farnesal (5.8%), ( E , E )‐farnesal (12.9%), 2,3‐dihydro‐( E )‐farnesol (10.3%) and ( E , E )‐farnesol (26.5%) as its principal components. One chemotype of L. novae‐angliae Joy Thomps. contained ( E )‐nerolidol (50%) as a major component, while L. rupicola Joy Thomps. contained α‐ and β‐pinene as principal components (totalling approximately 50%). L. continentale Joy Thomps., L. gregarium Joy Thomps., L. juniperinum Sm., a second chemotype of L. novae‐angliae , L. obovatum Sweet, both varieties of L. scoparium J. R. Forst & G. Forst. and L. squarrosum Gaertn. contained a mixture of mono‐ and sesquiterpenes, usually with the latter predominating. Copyright © 1999 John Wiley & Sons, Ltd.