Tsutomu Sugahara, Yuuki Komatsu, and Seiichi Takano" Pharmaceutical Institute, Tohoku University, Aoba yama, Sendai 980, Japan ... (+)-Polyzonimine (l), a terpenoid insect repellent produced by a millipede, was synthesized by a reaction sequence which utilizes the asymmetric [2,3] sigmatropic rearrangement of the ammonium ylide formed from the salt (10) to generate the chiral intermediate (2). ... In 1975 Smolanoff et al.1 reported the isolation of a novel ...
