Australian Journal of Chemistry

The constituents of Olearia heterocarpa. The structure of olearin, a diterpene dilactone of the cascarillin group

JT Pinhey, RF Simpson, IL Batey

Index: Pinhey,J.T. et al. Australian Journal of Chemistry, 1971 , vol. 24, p. 2621 - 2637

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Citation Number: 20

Abstract

Abstract Chloroform extraction of Olearia heterocarpa ST Blake has yielded a new diterpene dilactone, olearin, the known flavone, xanthomicrol, an unknown C 27 H 42 O 3 hydroxy acid, and a mixture of long-chain (approx. C 50) esters. On chemical and spectroscopic evidence olearin (1) has been shown to possess a rearranged enantio-labdane skeleton of the type displayed by the cascarillins. Correlation of olearin with a diterpene of known ...