
%0 Journal Article
%A Gill, Melvyn 
%A Buchanan, Malcolm S. 
%A Steel, Peter J. 
%A Milanovic, Nives M. 
%A Phonh-Axa, Somphone 
%T Pigments of Fungi. XLVIII Clavorubin from Two Australasian Toadstools of the Genus <emph type="2">Cortinarius</emph> and the X-Ray Crystal Structure of the Methyl Ester of 6-<emph type="2">O</emph>-Methylclavorubin
%J Australian Journal of Chemistry
%D 1998/05/20
%V 51
%N 5
%P 347-352
%K 
%R https://doi.org/10.1071/C97185
%U https://www.publish.csiro.au/paper/C97185 
%X Clavorubin (1,5,6,8-tetrahydroxy-3-methyl-9,10-dioxoanthracene-2-carboxylic acid) (1), previously known only from the ascomycetious rye fungus Claviceps purpurea (&#8216;ergot&#8217;), has been isolated from the fruit bodies of two Australasian basidiomycetes belonging to the genus Cortinarius and characterized by spectroscopic and chemical methods. A single-crystal X-ray structure analysis of the methyl ester (4) of 6-O-methylclavorubin establishes unequivocally, for the first time, the structure of the natural product. 
