
%0 Journal Article
%A Cooke, RG 
%A Johnson, BL 
%T Colouring Matters of Australian Plants. XI. Quinones from <I>Ventilago viminalis</I>
%J Australian Journal of Chemistry
%D 1963/08/01
%V 16
%N 4
%P 695-702
%K 
%R https://doi.org/10.1071/CH9630695
%U https://www.publish.csiro.au/paper/CH9630695 
%X The root bark of Ventilago viminalis Hook. contains three new colouring matters now named ventimalin, viminalin, and ventilagone. The first of these has been identified as 1,3,4,5,6-pentahydroxy-2-methylanthraquinone and the structure has been confirmed by synthesis. Viminalin is shown to be the 4,5-dimethyl ether of ventimalin. Ventilagone is apparently a naphthoquinone of the hydroxy- juglone type. Two known anthraquinones, chrysophanol and islandicin, have also been isolated and there is evidence for the presence of helminthosporin. 
