| abstract |
A class of chemical compounds comprising a 2(1H)-quinolone moiety and a substituted heterocyclic moiety, linked via the 3-position of the 2(1H)-quinolone moiety by a methylene group, are antagonists of dopamine receptor subtypes within the brain, having a selective affinity for the dopamine D4 receptor subtype over other dopamine receptor subtypes, and are accordingly of benefit in the treatment and/or prevention of psychotic disorders such as schizophrenia whilst manifesting fewer side-effects than those associated with classical neuroleptic drugs. |