Studies on the Metabolic Products of a Strain of Aspergillus fumigatus DH 413. V. A New Metabolite produced by Ethionine Inhibition

Abstract

A new metabolite (I) was isolated from the ethionine inhibited culture fluid of Aspergillus fumigatus DH 413, without accompanying the usual toluquinone derivatives such as fumigatin and spinulosin. The chemical structure of the new metabolite was established as 4-carboxy-5, 5'-dihydroxy-3, 3'-dimethyl-diphenylether based on the chemical degradations and physical properties.