Synthesis of Both the Enantiomers of Eldanolide (trans-3,7-Dimethyl-6-octen-4-olide), the Wing Gland Pheromone of the Male African Sugar-cane Borer

Abstract
Both the natural eldanolide [(3S,4R)-(+)-3,7-dimethyl-6-octen-4-olidej and its antipode, the pheromone produced by the male Eldana saccharina (Wlk.), were synthesized from optically pure methyl (R)-( + )-citronellate.