The transformations of (-)-thujopsene in liquid (HSO3F-SO2FCl) and over sol
id (TiO2/SO42-) superacids, as well as by the action of peroxy acids, were
studied. New tricyclic hydrocarbons were isolated. The experimental results
were compared with the data of computer analysis of the most probable tran
sformation pathways using molecular-mechanics and quantum-chemical methods.