Author's Organization：Institute of Applied Microbiology, University of Tokyo Kowa Chemical Laboratories, Kowa Co., Ltd. Institute of Applied Microbiology, University of Tokyo
Hofmann degradation of (-)-lupinine was reinvestigated to obtain (-)-4-methyl-nonane of the highest possible optical purity and Cookson's assignments of the absolute configurations of (-)-lupinine and (+)-epilupinine were reconfirmed.
