
%0 Journal Article
%A Elix, JA 
%A Gaul, KL 
%A Sterns, M 
%A Binsamsudin, MW 
%T The Structure of the Novel Lichen Xanthone Thiomelin and Its Cogenors
%J Australian Journal of Chemistry
%D 1987/07/01
%V 40
%N 7
%P 1169-1178
%K 
%R https://doi.org/10.1071/CH9871169
%U https://www.publish.csiro.au/paper/CH9871169 
%X The structure determination of thiomelin (2,4-dichloro-1,8-dihydroxy-5-methoxy-6-methyl-9H-xanthen-9-one) (3), an unusual lichen metabolite probably derived biosynthetically by oxidative ring opening of a precursor anthraquinone, is reported. The crystal structure of thiomelin  diacetate (4) was determined by X-ray diffraction, while that of the cogenors 8-O-methylthiomelin (5), 4-dechlorothiomelin (7), 4-dechloro-8- O- methylthiomelin (9), 2-dechloro-8- O- methylthiomelin (10) and 2,4-dichloro-l-hydroxy-7-methoxy-6,8-dimethyl-9H-xanthen-9-one (12) were deduced from spectroscopic data. 
