US Patent 5,672,621
United States Patent and Trademark Office
The United States of America as represented by the Secretary of (Washington, DC) ; University of Iowa Research Foundation (Iowa City, IA, US) ; Biotechnology Research & Development Corporation (Peoria, IL)
Carbonarins A, B, C, D, E, F, G, and H have been isolated from the sclerotia of the fungus Aspergillus carbonarius. The carbonarius 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.
Alfatafta, Ali A.; Dowd, Patrick F.; Gloer, James B.; and Wicklow, Donald T. Carbonarin antiinsectan metabolites. US Patent 5,672,621 filed February 27, 1996 and issued September 30, 1997. https://ir.uiowa.edu/patents/168