Compounds of general formula (I)
in which R
1
, A
1
, A
2
and R
2
have any of the meanings given in the specification, have affinity for sigma receptors and are useful in the treatment of disorders of the central nervous system.
Compounds of general formula (Ia): in which R
1
, A
1
, m, X, n, Y and R
3
have any of the meanings given in the specification, have affinity for sigma receptors and are useful in the treatment of disorders of the central nervous system.
Compounds of general formula (Ia): in which R1, A1, m, X, n, Y and R3 have any of the meanings given in the specification, have affinity for sigma receptors and are useful in the treatment of disorders of the central nervous system.