ScienceAsia 8 (1982): 137-145 |doi: 10.2306/scienceasia1513-1874.1982.08.137

THE VOLATILE LEAF OILS OF EUCALYPTUS YOUMANII AND EUCALYPTUS MACRORHYNCHA.

JOSEPH J. BROPHY, ERICH V. LASSAK^a, SOE WIN^b, and ROBERT F. TOIA

ABSTRACT: The compositions of the steam volatile leaf oils of two Eucalyptus species, E. youmanii and E. macrorhyncha have been examined by G.L.C. and G.L.C.-M.S. techniques. Only small differences were found, thus adding chemotaxonomic support to the close botanical relationship postulated for these species. Of the approximately thirty compounds present in > 0.1 % of the mixtures, twenty three have been identified. In each case 1,8-cineole and the three isomeric eudesmols were the major mono- and sesquiterpenoid components respectively.

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Department of Organic Chemistry, University of New South Wales, P.O. Box 1, Kensington, N.S. W., 2033, Australia
a Biological and Chemical Research Institute, N.S.W. Department of Agriculture, Rydalmere, N.S.W., 2116, Australia.
b Present Address: Department of Chemistry, Arts and Science University, Rangoon, Burma.

Received 12 February 1982