We describe efficient and flexible enantioselective syntheses of the active enantiomers of the pheromones of pine sawflies, including the species Diprion jingyuanensis, their homologs and, stereoisomers, as well as those identified from the Chinese species Diprion jingyuanensis, i.e., 126. A total of 48 compounds, including acetates 78–101 and propanoates 102–125, have been synthesized. Our general
Synthesis and gas chromatographic separation of the eight stereoisomers of diprionol and their acetates, components of the sex pheromone of pine sawflies
The present report describes syntheses of the eight possible stereoisomers of 3,7-dimediyl-2-pentadecanol 1, and the corresponding acetates. The latter are components of the sexpheromone of the Neodiprion, Diprion and Gilpinia genera (Diprionidae). Synthetic intermediates were prepared from either chiral starting materials or by asymmetricsyntheses. The stereochemical compositions of the isomeric