
%0 Journal Article
%A Pinhey, JT 
%A Simpson, RF 
%A Batey, IL 
%T The constituents of <I>Olearia heterocarpa</I>. The structure of olearin, a diterpene dilactone of the cascarillin group
%J Australian Journal of Chemistry
%D 1971/12/01
%V 24
%N 12
%P 2621-2637
%K 
%R https://doi.org/10.1071/CH9712621
%U https://www.publish.csiro.au/paper/CH9712621 
%X Chloroform extraction of Olearia heterocarpa S. T. Blake has yielded a new diterpene dilactone, olearin, the known flavone, xanthomicrol, an unknown C27H42O3 hydroxy acid, and a mixture of long-chain (approx. C50) 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 stereochemistry has defined the absolute con- figuration at all but one centre. 
