Aurovertins F-H from the entomopathogenic fungus Metarhizium anisopliae.

Analysis of fermentation broth of the entomopathogenic fungus Metarhizium anisopliae has led to isolation of aurovertin D ( 1) and three new aurovertin-type metabolites, aurovertin F ( 2), aurovertin G ( 3), and aurovertin H ( 4). Their structures were determined on the basis of spectroscopic analyses and chemical conversions.