Identification of Cyclic Enolethers from Insects: Alkyldihydropyranes from Bees and AIkyldihydro-4H-pyran-4-ones from a Male Moth*

Abstract
Mass spectrometric fragmentation patterns of alkyl-3,4-dihydro-2H-pyranes and alkyl-2,3-dihydro-4H-pyran-4-ones are described. Through GC/MS analyses, respective compounds showing unbranched carbon skeletons are identified for the first time as volatile signals of social and solitary bees and of the male moth Hepialus hecta L.

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