
%0 Journal Article
%A Chow, PW 
%A Jefferies, PR 
%T The chemistry of the Euphorbiaceae. XXI. Compounds from <i>Beyeria brevifolia</i>: (15S)-15,16-Dihydroxy-3,4-seco-<i>enantio</i>-pimara-4(18),7-dien-3-oic acid
%J Australian Journal of Chemistry
%D 1968/10/01
%V 21
%N 10
%P 2529-2542
%K 
%R https://doi.org/10.1071/CH9682529
%U https://www.publish.csiro.au/paper/CH9682529 
%X .The isolation of the title acid (I) together with a new flavone and known diterpenes of the beyerane and kaurane series is described. The structure (I) assigned to the new acid rests mainly on its conversion into 3,4-secobeyerane, which was partly synthesized. The configuration of C 15 was assigned on the basis of a method due to Horeau. The structure (XXX) of the new flavone was determined by degradation of the triethyl ether. 
