Synthesis of the Four Stereoisomers of 2,6-Dimethyloctane-1,8-dioic Acid, a Component of the Copulation Release Pheromone of the Cowpea Weevil, Callosobruchus maculatus

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A diastereomeric mixture and the four stereoisomers of 2,6-dimethyloctane-1,8-dioic acid (2), a copulation release pheromone of the cowpea weevil, Callosobruchus maculatus, were synthesized. The stereoisomeric purities of the four synthetic isomers of 2 were determined by the HPLC analyses of their bis-2-(2,3-anthracenedicarboximide)-1-cyclohexyl esters.