Abstract: A class of 8-fluoro-3-phenylimidazo[1,2-?]pyridine derivatives, substituted at the meta position of the phenyl ring by an optionally substituted aryl or heteroaryl group, or by a pyrrolidinonyl group, which is directly attached or bridged by an oxygen atom or by a —NH— or —OCH2— linkage, being selective ligands for GABAA receptors, in particular having high affinity for the ?2 and/or ?3 and/or ?5 subunit thereof, are accordingly of benefit in the treatment and/or prevention of adverse conditions of the central nervous system, including anxiety, convulsions and cognitive disorders.

Abstract: A class of imidazo[1,2-?]pyrimidine derivatives, substituted at the 3-position by an optionally substituted five-membered or six-membered heteroaromatic ring, are selective ligands for GABAA receptors, in particular having good affinity for the ?2 and/or ?3 and/or ?5 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of adverse conditions of the central nervous system, including anxiety, convulsions and cognitive disorders.

Abstract: The compound (I) is a GABAa receptor ligand, functionally selective for the ?2 and/or ?3 subunit, and is useful in the treatment of deleterious mental states, in particular anxiety.

Abstract: The present invention is directed to compounds comprising a triazolo[4,3-b]pyridazine moiety which inhibit the activity of Akt, a serine/threonine protein kinase. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for treating cancer comprising administration of the compounds of the invention.

Abstract: A class of 3-phenylimidazo[1,2-?]pyrimidine derivatives, substituted at the meta position of the phenyl ring by an optionally substituted aryl or heteroaryl group which is directly attached or bridged by an oxygen atom or a —NH— linkage, and further substituted on the phenyl ring by alkyl, trifluoromethyl, alkoxy or one or two halogen atoms, especially fluoro, are selective ligands for GABAA receptors, in particular having good affinity for the ?2 and/or ?3 and/or ?5 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of adverse conditions of the central nervous system, including anxiety, convulsions and cognitive disorders.

Abstract: A class of substituted 1,2,4-triazolo[4,3-b]pyridazine derivatives, possessing a fluoro-substituted phenyl ring at the 3-position and a heteroaryl-methoxy moiety at the 6-position, are selective ligands for GABAA receptors, in particular having high affinity for the &agr;2 and/or &agr;3 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of disorders of the central nervous system, including anxiety and convulsions.

Abstract: The compound (I) is a GABAa receptor ligand, functionally selective for the &agr;2 and/or &agr;3 subunit, and is useful in the treatment of deleterious mental states, in particular anxiety.

Abstract: The present invention is directed to compounds comprising a triazolo[4,3-b]pyridazine moiety which inhibit the activity of Akt, a serine/threonine protein kinase. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for treating cancer comprising administration of the compounds of the invention.

Abstract: A class of imidazo[1,2-&agr;]pyrimidine derivatives, substituted at the 3-position by an optionally substituted five-membered or six-membered heteroaromatic ring, are selective ligands for GABAA receptors, in particular having good affinity for the &agr;2 and/or &agr;3 and/or &agr;5 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of adverse conditions of the central nervous system, including anxiety, convulsions and cognitive disorders.

Abstract: A class of substituted 1,2,4-triazolo[4,3b]pyridazine derivatives, possessing a fluoro-substituted phenyl ring at the 3-position and a heteroaryl-methoxy moiety at the 6-position, are selective ligands for GABAA receptors, in particular having high affinity for the &agr;2 and/or &agr;3 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of disorders of the central nervous system, including anxiety and convulsions.

Abstract: A class of 3-phenylimidazo(1,2-a)pyrimidine derivatives (of Formula I, or salt or prodrug thereof: I) wherein Y represents a chemical bond, an oxygen atom, or a —NH— linkage; Z represents an optionally substituted aryl or heteroaryl group; R1 represents hydrogen, hydrocarbon, a heterocyclic group, halogen, cyano trifluoromethyl, nitro, —ORa, —SRa, —SORa, —SO2Ra, —SO2NRaRb, —NRaRb, —NRaCORb, —NRaCO2Rb, —CORa, CO2Ra, —CONRaRb or —CRa═NORb; and Ra and Rb independently represent hydrogen, hydrocarbon or a heterocyclic group.

Abstract: A class of 3-phenylimidazo(1,2-&agr;) pyrimidine derivatives (of Formula I, or salt or prodrug thereof: I) wherein Y represents a chemical bond, an oxygen atom, or a —NH— linkage; Z represents an optionally substituted aryl or heteroaryl group; R1 represents hydrogen, hydrocarbon, a heterocyclic group, halogen, cyano trifluoromethyl, nitro, —ORa, —SRa, —SORa, —SO2Ra, —SO2NRaRb, —NRaRb, —NRaCORb, —NRaCO2Rb, —CORa, CO2Ra, —CONRaRb or —CRa═NORb; and Ra and Rb independently represent hydrogen, hydrocarbon or a heterocyclic group.

Abstract: A class of substituted 1,2,4-triazolo[4,3-b]pyridazine derivatives, possessing a difluoro- or trifluoro-substituted phenyl ring at the 3-position, a triazolyl-methoxy moiety at the 6-position, and a tert-butyl group at the 7-position, are selective ligands for GABAA receptors, in particular having high affinity for &agr;2 and/or &agr;3 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of disorders of the central nervous system, including anxiety and convulsions.

Abstract: A class of substituted 1,2,4-triazolo[4,3-]pyridazine derivatives, possessing an optionally substituted cycloalkyl, phenyl or heteroaryl substituent at the 3-position, a substituted alkoxy moiety at the 6-position, and an optionally substituted bicycloalkyl ring system at the 7-position, are selective ligands for GABAA receptors, in particular having high affinity for the &agr;2 and/or &agr;3 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of disorders of the central nervous system, including anxiety and convulsions.

Abstract: 1,2,4-triazolo[4,3-b]pyridazine derivatives, possessing a fluoro-substituted phenyl ring at the 3-position and a heteroaryl-alkoxy moiety at the 6-position, are selective ligands for GABAA receptors, in particular having high affinity for the &agr;2 and/or &agr;3 subunit thereof, are useful in the treatment of anxiety and convulsions.

Abstract: 1,2,4-triazolo[4,3-b]pyridazine derivatives, possessing a difluoro-or tri-fluoro-substituted phenyl ring at the 3-position, a triazolyl moiety at the 6-position, and a tert-butyl group at the 7-position, are selective ligands for GABAA receptors, in particular having high affinity for the &agr;2 and/or &agr;3 subunit thereof, and are useful in the treatment of anxiety and convulsions.

Abstract: A class of 3-phenylimidazo[1,2-&agr;]pyrimidine derivatives, substituted at the meta position of the phenyl ring by an optionally substituted aryl or heteroaryl group which is directly attached or bridged by an oxygen atom or a —NH— linkage, and further substituted on the phenyl ring by alkyl, trifluoromethyl, alkoxy or one or two halogen atoms, especially fluoro, are selective ligands for GABAA receptors, in particular having good affinity for the &agr;2 and/or &agr;3 and/or &agr;5 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of adverse conditions of the central nervous system, including anxiety, convulsions and cognitive disorders.

Abstract: Compounds according to Formula (I): or a salt or prodrug thereof, have good affinity as ligands for the alpha2 and/or alpha3 subunit of the human GABAA receptor and are useful for treatment of disorders of the central nervous system, including anxiety and convulsions.

Abstract: A substituted triazolopyridazine derivative, its use in cognition enhancement therapy, compositions containing it and processes for its manufacture.

Abstract: 1,2,4-triazolo[4,3-b]pyridazine derivatives are ligands for GABAA receptors useful in the treatment of disorders of dementing illnesses.