Abstract: A class of fused tricyclic heteroaromatic compounds of formula (I) as defined in claim 1 or a salt thereof or a prodrug thereof, containing a fused pyrazole, oxazole or pyrimidine ring are ligands for dopamine receptor subtypes within the body and are therefore of use in the treatment and/or prevention of disorders of the dopamine system, such as schizophrenia.

Abstract: A class of heteroaromatic compounds incorporating a substituted five-membered heteroaromatic nucleus which contains at least two nitrogen atoms are ligands for dopamine receptor subtypes within the body and are therefore useful in the treatment and/or prevention of disorders of the dopamine system, in particular schizophrenia and depression.

Abstract: A class of substituted 1,2,3,6-tetrahydropyridine derivatives are disclosed that are ligands for dopamine receptor subtypes within the body. These compounds are therefore useful in the treatment and/or prevention of disorders of the dopamine system, in particular schizophrenia or depression.

Abstract: A class of 1,2,3,6-tetrahydropyridine derivatives, substituted in the 4-position by a fused bicyclic heteroaromatic moiety and in the 1-position by an optionally substituted benzyl moiety, are ligands for dopamine receptor subtypes within the body, in particular the D.sub.4 subtype, and are therefore useful in the treatment and/or prevention of disorders of the dopamine system, in particular schizophrenia or depression.

Abstract: Disclosed is a class of pyrrolo?2,3-b!pyridine derivatives of formula (I) wherein Q represents a moiety of formula Qa or Qb, which are ligands for dopamine receptor subtypes within the body, in particular the dopamine D4 receptor subtype and are therefore useful in the treatment and/or prevention of disorders of the dopamine system, including schizophrenia.

Abstract: Compound of formula (I), or a pharmaceutically acceptable salt thereof or a prodrug thereof wherein E represents --CH.sub.2 -- or --CH.sub.2 CH.sub.2 --; R represents hydrogen or C.sub.1-6 alkyl; Q represents a moiety of formula Qa, Qb, Qc or Qd which are antagonists of dopamine receptor subtypes within the brain, having a selective affinity for the dopamine D.sub.4 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.

Abstract: A class of benzimidazole derivatives, substituted at the 2-position by a substituted piperazinylmethyl or piperazinylethyl moiety, are antagonists of dopamine receptor subtypes within the brain, having a selective affinity for the dopamine D.sub.4 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.

Abstract: Disclosed is a class of 1H-indazole derivatives, substituted at the 3-position by a substituted piperazinylmethyl moiety, which 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, while manifesting fewer side-effects than those associated with classical neuroleptic drugs.

Abstract: A class of substituted pyrimidine derivatives are ligands for dopamine receptor subtypes within the body and are therefore useful in the treatment of disorders of the dopamine system, in particular schizophrenia ##STR1##

Abstract: The invention is directed to substituted benzimidazole compounds which are ligands for dopamine receptor subtypes used in the treatment of the dopamine system.

Abstract: A class of pyrrolo?2,3 -b!pyridine derivatives, linked via the 3-position thereof by a methylene group to a tetrahydropyridinyl moiety, the latter moiety being substituted in turn by an aryl- or heteroaryl-substituted divalent monocyclic radical, are ligands for dopamine receptorsubtypes within the body, in particular the D.sub.4 subtype, and are accordingly of use in the treatment and/or prevention of disorders of the dopamine system, including schizophrenia and depression.

Abstract: Compounds of formula I are ligands for dopamine receptor subtypes within the body and are therefore useful in the treatment and/or prevention of disorders of the dopamine system, in particular schizophrenia.

Abstract: A class of substituted furo?2,3-b!pyridine derivatives are ligands for dopamine receptor subtypes within the body, in particular the D.sub.4 subtype, and are therefore useful in the treatment and/or prevention of disorders of the dopamine system, in particular schizophrenia or depression.

Abstract: A class of fused tricyclic heteroaromatic compounds of formula (I), or a salt thereof or a prodrug thereof containing a fused pyrazole ring are ligands for dopamine receptor subtypes within the body and are therefore of use in the treatment and/or prevention of disorders of the dopamine system, such as schizophrenia.

Abstract: A class of substituted isoxazole and pyrazole derivatives of formula (I), or a salt thereof of or a prodrug thereof, wherein the broken circle represents two non-adjacent double bonds whereby the five-membered ring containing X and Y is aromatic; one of X and Y represents nitrogen, and the other of X and Y represents oxygen or N--R.sup.5 ; R.sup.1 represents hydrogen, C.sub.1-6 alkyl or trifluoromethyl; R.sup.2 and R.sup.3 independently represent hydrogen, hydrocarbon, a heterocyclic group, halogen, cyano, trifluoromethyl, nitro, --OR.sup.a, --SR.sup.a, --SOR.sup.a, --SO.sub.2 R.sup.a, --SO.sub.2 NR.sup.a R.sup.b, --NR.sup.a R.sup.a, --NR.sup.a CO.sub.2 R.sup.b, --COR.sup.a, --CO.sub.2 R.sup.a or --CONR.sup.a R.sup.b, R.sup.4 represents hydrocarbon or a heterocyclic group; R.sup.5 represents hydrogen or C.sub.1-6 alkyl; and R.sup.a and R.sup.

Abstract: The methanesulfonate salt of a class of antipsychotic compounds comprising a benzo?b!furan moiety and a substituted heterocyclic moiety, linked via the 3-position of the benzo?b!furan moiety by a methylene group, which are antagonists of dopamine receptor subtypes within the brain, being extremely potent antagonists of the human dopamine D.sub.4 receptor subtype and having a selective affinity for the D.sub.4 subtype over other dopamine receptor subtypes, possess advantageous qualities in terms of their improved aqueous solubility relative to the corresponding free base and, as such, provide for greater ease of formulation and display enhanced pharmacokinetic properties, including oral absorption.

Abstract: A class of chemical compounds comprising a benzo [b] furan moiety and a substituted heterocyclic moiety, linked via the 3-position of the benzo [b] furan moiety by a methylene group, are antagonists of dopamine receptor subtypes within the brain, being extremely potent antagonists of the human dopamine D.sub.4 subtype over other dopamine receptor subtypes, and are accordingly of benefit in the treatment and/or prevention of psychotic disorders such as schizophrenia while manifesting fewer side-effects than those associated with classical neuroleptic drugs.

Abstract: A class of chemical compounds comprising a 1-H-indazole moiety and a substituted heterocyclic moiety, linked via the 3-position of the indazole moiety by a methylene group, are ligands for dopamine receptor subtypes within the body and are therefore useful in the treatment and/or prevention of disorders of the dopamine system, in particular schizophrenia. In formula (I) R represents hydrogen or C.sub.1-6 alkyl, Q represents a moiety of formula Qa, Qb, or Qc.

Abstract: The present invention accordingly provides the use of a compound of formula I, or a pharmaceutically acceptable salt thereof or a prodrug thereof: ##STR1## wherein R.sup.1 represents hydrogen or C.sub.1-6 alkyl;Z represents --CH.sub.2 -- or --CH.sub.2 CH.sub.2 --;R.sup.2 represents hydrogen, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, aryl(C.sub.1-6)alkyl or halogen;R.sup.3, R.sup.4 and R.sup.5 independently represent hydrogen, hydrocarbon, a heterocyclic group, halogen, cyano, trifluoromethyl, nitro, --OR.sup.a, --SR.sup.a, --SOR.sup.a, --SO.sub.2 R.sup.a, --SO.sub.2 NR.sup.a R.sup.b, --NR.sub.a R.sup.b, --NR.sup.a COR.sup.b, --NR.sup.a CO.sub.2 R.sup.b, --COR.sup.a, --CO.sub.2 R.sup.a or --CONR.sup.a R.sup.b ; andR.sup.a and R.sup.b independently represent hydrogen, hydrocarbon or a heterocyclic group;for the manufacture of a medicament for the treatment and/or prevention of psychotic disorders such as schizophrenia.