Abstract
Several fungal pigments were isolated by cultivation of a strain of Aspergillus fumigatus which was isolated from the dust of asthmatic patients' rooms. Spinulosin, fumigatin and its quinol (m.p. 107.5∼109°) were determined, though the melting point of the quinol was rather much different from the literature (99∼101°). The chemical structure of a new metabolite, m.p. 74°(II) was determined as 2-methyl-5-methoxy-6-hydroxy-p-benzoquinone 2, 3-epoxide. Another compound, m.p.182°(IV) was found to have a closely related structure to II. Compound, m.p.204° had p-quinone moiety in the structure, but not the C8 compound different from all other metabolites.
