
%0 Journal Article
%A Cooke, RG 
%A Dowd, H 
%T Colouring Matters of Australian Plants. II. Naphthoquinones from <I>Diospyros hebecarpa</I> A. Cunn
%J Australian Journal of Chemistry
%D 1952/12/01
%V 5
%N 4
%P 760-767
%K 
%R https://doi.org/10.1071/CH9520760
%U https://www.publish.csiro.au/paper/CH9520760 
%X Ether extraction of Diospyros hebecarpa A. Cunn. yields plumbagin, and two new compounds which are shown to be 5-hydroxy-7-methyl-1,4-naphthoquinone and 1,4-diketo-5-hydroxy-7-methyl-1,2,3,4-tetrahydronaphthalene. The ultraviolet absorption spectra of these and related compounds are recorded, and the synthesis of 1,4,5-tri-methoxy-7-methylnaphthalene is described. 
