
%0 Journal Article
%A Henrick, CA 
%A Jefferies, PR 
%T The chemistry of the Euphorbiaceae. VII. The diterpenes of <I>Ricinocarpus stylosus</I> Diels
%J Australian Journal of Chemistry
%D 1964/08/01
%V 17
%N 8
%P 915-933
%K 
%R https://doi.org/10.1071/CH9640915
%U https://www.publish.csiro.au/paper/CH9640915 
%X The ether extract of Ricinocarpus stylosus has yielded polyalthic acid, three new naturally occurring flavonoid pigments and four new kauranoid diterpenes. The latter have been shown to be 16&#945;-(-)-kauran-l7,19-dioic acid (I; R,R' = CO2H), 19-hydroxy-16&#945;-(-)-kauran-17-oic acid (I; R = CH2OH, R' = CO2H), kauran-16&#945;,-17,19-triol (III; R,R' = CH2OH) and (-)-kaur-16-en-19-oic acid (IV; R = CO2H). The N.M.R. correlations of these diterpenoids are discussed. 
