(+)-Grandisol, which is a component of the male-produced pheromone of the boll weevil, Anthonomus grandis, was synthesized from levoglucosenone. The key steps in the synthesis are the intramolecular diatereoselective four-membered ring construction and the Baeyer-Villiger oxidation. The 17-step procedure led to a known synthetic intermediate of (+)-grandisol.