NEW INSECTICIDAL CYCLODEPSIPEPTIDES FROM THE FUNGUS ISARIA FELINA

I. PRODUCTION, ISOLATION AND INSECTICIDAL PROPERTIES OF ISARIINS B, C AND D

Abstract

Three new cyclodepsipeptides related to the previously described isariin were isolated from a strain of Isaria felina. They were named isariins B, C and D. Isariin D and, to a lesser extent, isariin C, exhibited insecticidal activity against Galleria mellonella larvae, whereas isariin B and isariin itself proved inactive.