Terpenoid Chemistry. III. The Essential Oils of Eucalyptus deglupta Blume and E. torelliana F. Muell

Abstract

The essential oils of two eucalypts, which are exceptional in that they normally grow within the margin of tropical rain-forest, have been examined. The oil from Eucalyptus deglupta Blume was found to contain isovaleraldehyde, (±)-α-pinene, (-)-α-phellandrene, p-cymene, ocimene, (-)-carvotanacetone, and (+)-nerolidol. The oil from E. torelliana F. Muell. contained benzaldehyde, (±)- and (+)-α-pinene, (-)-β- pinene, ocimene, (+)-aromadendrene, and sesquiterpene alcohols. Of these constituents, ocimene, carvotanacetone, and nerolidol have not previously been identified in eucalyptus oils. The conclusion is reached nevertheless, that because of the inadequacy of the published data on eucalyptus oil compositions, no significance can be attached as yet to the presence of these unusual constituents.