The relationships among the metabolites from a strain of Asp.fumigatus (DH 413) were discussed. Spinulosin and compound, m.p.204°were not metabolites, but secondary compounds converted from epoxy compound (II) which existed in its reduced form. In the biosynthetic pathway of toluquinone the reduced form of II seems to be an intermediate placed between orsellinic acid and quinol of fumigatin (I).
