Hideaki Magari, Hiroshi Hirota and Takeyoshi Takahashi
J. Chem. Soc., Chem. Commun., 1987, 1196-1198
DOI:
10.1039/C39870001196,
Paper
(±)-Isobicyclogermacrenal (1), a bicyclo[8.1.0]undecane sesquiterpene aldehyde, has been synthesized from piperitenone (3) in a stereoselective manner via 14 steps in an overall yield of 36%.