Secondary fungal metabolites and their biological activities, III. Further metabolites from dual cultures of the antagonistic basidiomycetes Heterobasidion annosum and Gloeophyllum abietinum.

In addition to a preceding publication (Sonnenbichler, J., Bliestle, I.M., Peipp, H. & Holdenrieder, O. (1989) Biol. Chem. Hoppe-Seyler 370, 1295-1303), six further metabolites formed in dual cultures of the antagonistic fungi Heterobasidion annosum and Gloeophyllum abietinum are described; three of them represent unknown structures. The producing organisms have been identified. The metabolites fommanoxin from H. annosum and oosponol from G. abietinum show that the toxins can be detoxified by metabolization by the antagonistic fungus. The newly-described compounds have been tested for their fungicidal properties.