On the Biosynthesis of Toluquinones by Aspergillus fumigatus. I. The Biogenetic Role of Orsellinic Acid and Orcinol.

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Abstract
Orsellinic acid and its decar-boxylation product, orcinol, have been isolated from a strain of A. fumigatus known to produce fumigatin and related toluquinones. Evidence was obtained for the intermediate formation of orsellinic add in the biosynthesis of both orcinol and the toluquinonoid pigments. The pigments seemed not to be formed via orcinol.