The pharmacological activity of a series of 9,10-dihydro-9,10-methanoa
nthracene methylene amines which function as mixed dopaminergic (D-1/D
-2) and serotonergic (5HT(2)) antagonists is described. The work resul
ted in a putative atypical antipsychotic, ZD3638, of novel structure a
nd pharmacological profile.