Compound formulation and treatment or prophylaxis processes for psychotic disorders or intellectual impairment disorders and anxiety and compound preparation

摘要

There are provided new compounds of formula I: wherein R represents hydrogen or methyl; and n represents 1 or 2; or a pharmaceutically acceptable acid addition salt thereof, together with processes for preparing them, compositions containing them and their use in therapy. Compounds of formula I are expected to be useful in the treatment of psychotic disorders, intellectual impairment disorders and anxiety.