Australian Journal of Chemistry

The chemistry of the Euphorbiaceae. VII. The diterpenes of Ricinocarpus stylosus Diels

CA Henrick, PR Jefferies

Index: Henrick,C.A.; Jefferies,P.R. Australian Journal of Chemistry, 1964 , vol. 17, p. 915 - 933

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Citation Number: 115

Abstract

Abstract 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 16α-(-)-kauran-l7, 19-dioic acid (I; R, R'= CO 2 H), 19-hydroxy-16α-(-)- kauran-17-oic acid (I; R= CH 2 OH, R'= CO 2 H), kauran-16α,-17, 19-triol (III; R, R'= CH 2 OH) and (-)-kaur-16-en-19-oic acid (IV; R= CO 2 H). The NMR correlations of these ...