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PDM V1.0, Open Access
Carbonarins A, B, C, D, E, F, G, and H have been isolated from the sclerotia of the fungus Aspergillus carbonarius. The carbonarins are effective for controlling Coleopteran and Lepidopteran insects. The carbonarins have the structure: ##STR1## wherein: R1 is a hydrogen atom or a hydroxy group; R2 is a hydrogen atom or a methoxy group; R3 is a hydrogen atom or a naphthopyrone group; and X is an oxygen atom or an NH group.