Novel anthraquinones from stationary cultures of Fusarium oxysporum

Abstract

Two new anthraquinones are described which were produced by stationary cultures of Fusarium oxysporum isolated from the roots of diseased citrus trees. They are 2-acetyl-3,8-dihydroxy- or 3-acetyl-2,8-dihydroxy-6-methoxy-anthraquinone and 2-(1-hydroxyethyl)-3,8-dihydroxy or 3-(1-hydroxyethyl)-2,8-dihydroxy-6-methoxy-anthraquinone. These compounds differ from most other microbial anthraquinones in that they lack hydroxyl substituents at the 1,4 positions, and have an acetyl or 1-hydroxyethyl group at the 2 or 3 positions. This is the first report of anthraquinone metabolites produced by F. oxysporum.