Abstract For the assignment of the configuration at C (8) and C (15) of the natural oviposition- deterring pheromone 1 in Rhagoletis cerasi L., the four possible stereoisomers of 1 are synthesized. By condensing the C 6 building blocks (5R)-4 and (5S)-4 with the boron enolates of the C 10 building blocks (4S)-13 and (4R)-13, followed by decarboxylative dehydration, all stereoisomers of 16 are available (Scheme 5). Glucosylation of 16 ...
