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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.
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Baute et al. (1981) studied this question.
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