A hydroxamic acid from Aspergillus nidulans with antibiotic activity against Proteus species

An iron-complexing antibiotic with a narrow spectrum of biological activity was produced by several strains of Aspergillus nidulans when grown in a low-iron, chemically defined medium. Its chemical and biological properties closely resembled those of desferritriacetylfusigen, a metabolite of several other Aspergilli and Penicillia.