
%0 Journal Article
%A Elix, JA 
%A Naidu, R 
%A Laundon, JR 
%T A Synthesis of the Lichen Dibenzofuran Pannaric Acid 2-Methyl Ester and Its Isomer 3-O-Methylpannaric Acid
%J Australian Journal of Chemistry
%D 1992/04/01
%V 45
%N 4
%P 785-791
%K 
%R https://doi.org/10.1071/CH9920785
%U https://www.publish.csiro.au/paper/CH9920785 
%X A total synthesis of pannaric acid 2-methyl ester (2-methyl hydrogen 3,9-dihydroxy-1,7-dimethyldibenzofuran-2,6-dicarboxylae) (1) and 3-O-methylpannaric acid (9-hydroxy- 3-methoxy-1,7-dimethyldibemofuran-2,6-dicarboxylic acid) (2) has been achieved through a biomimetic-type approach by using palladium(n) acetate in the key cyclization step. The acid (1) was shown to be identical to a major metabolite of the lichen Roccella capensis and a minor or trace constituent of the lichens Leproloma diffusum and L. vouauxii. 
