Butyrophenones from the isomeric 2-amino-5-phenylbicyclo[3.3.1]nonanes.

The preparation of 5-phenylbicyclo [3.3.1]nonan-2-one is described starting from the ketal of 4-phenyl-4-(2-carbethoxyethyl)cyclohexan-1-one. The ketone was then taken on to the butyrophenone derivatives of endo-and exo-5phenylbicyclo[3.3.1]nonyl-2-amine. CNS screening results of these compounds are described.