The absoluteconfiguration of oblongolide is shown to be (1) by an unambiguous synthesis from (+)-citronellol involving an intramolecular Diels–Alder reaction.
The convergent synthesis in high enantiomeric and diastereoisomeric purity of (11R,17S)-11, 17-dimethylhentriacontane, a communication pheromone of ant Camponotus vagus is described. The stereogenic centres were introduced from commercially available (R)-citronellol and (R)-citronellal. Copyright (C) 1996 Elsevier Science Ltd
Shing, Tony K.M.; Yang, Jun, Journal of the Chinese Chemical Society, 1995, vol. 42, # 4, p. 709 - 712