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.
Type:
Grant
Filed:
June 28, 2000
Date of Patent:
June 17, 2003
Assignee:
Merck Sharp & Dohme Limited
Inventors:
William Robert Carling, Jose Luis Castro Pineiro, Ian James Collins, Alexander Richard Guiblin, Timothy Harrison, Andrew Madin, Kevin William Moore, Michael Geoffrey Russell, Gayle Scott, Leslie Joseph Street
Abstract: A class of substituted and/or ring-fused pyrazolo[3,4-b]pyridine derivatives, possessing an optionally substituted cycloalkyl, phenyl or heteroaryl substituent on the pyrazole nitrogen atom adjacent the pyridine nucleus, and an optionally substituted cycloalkyl-alkoxy, aryl-alkoxy or heteroaryl-alkoxy substituent on the carbon atom adjacent the pyridine ring nitrogen atom, are selective ligands for GABAA receptors, in particular having high affinity for the &bgr;2 and/or &bgr;3 subunit thereof, and are accordingly of benefit in the treatment and/or prevention of adverse neurological disorders, including anxiety and convulsions.
Type:
Grant
Filed:
June 14, 2002
Date of Patent:
April 1, 2003
Assignee:
Merck Sharp & Dohme Limited
Inventors:
Ian James Collins, Linda Elizabeth Keown, Leslie Joseph Street
Abstract: Compounds according to Formula (I) or a pharmaceutically acceptable salt thereof are GABA-A Alpha 5 ligands useful for enhancing cognition:
where A is C1-6alkyl, C2-6alkenyl, C2-6alkynyl, C3-6cycloalkyl, arylC1-6alkyl, or aryl wherein the aryl group is optionally substituted by halogen, C1-6alkyl, CF3, CN, NO2 or NH2, NR1R10, S(O)pR1, heteroarylC1-6alkyl or heteroaryl where heteroaryl is a 5- or 6-membered heteroaromatic ring as defined for B; and B is phenyl or a 5-membered ring having one or two unsaturations containing 1, 2, 3, or 4 heteroatoms chosen from O, N and S provided that not more than one heteroatom is other than N, a 6-membered heteroaromatic ring containing 1, 2, 3 or 4 nitrogen atoms, each of which rings is optionally substituted by one or more substituents.
Type:
Grant
Filed:
November 6, 2000
Date of Patent:
May 28, 2002
Assignee:
Merck Sharp & Dohme Limited
Inventors:
Howard Barff Broughton, Helen Jane Bryant, Mark Stuart Chambers, Neil Roy Curtis
Abstract: Compounds according to Formula (I) or a salt thereof are selective ligands for GABAA receptors useful for treatment of disorders of the central nervous system:
Type:
Grant
Filed:
January 4, 2001
Date of Patent:
March 5, 2002
Assignee:
Merck Sharp & Dohme Limited
Inventors:
Ian James Collins, Stephen Robert Fletcher, Timothy Harrison, Paul David Leeson, Christopher Richard Moyes, Alan John Nadin, Michael Rowley, Timothy Jason Sparey, Martin Richard Teall
Abstract: A method of treatment for enhancing cognition in the treatment of Alzheimer's disease, for example, employs a specific GABAA Alpha5 receptor ligand.
Abstract: 1,2,4-triazolo[4,3-b]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, are useful in the treatment of anxiety and convulsions.
Type:
Grant
Filed:
June 26, 2000
Date of Patent:
October 16, 2001
Assignee:
Merck Sharp & Dohme Limited
Inventors:
William Robert Carling, Kevin William Moore, Leslie Joseph Street
Abstract: 1,2,4-triazolo[4,3-b]pyridazine derivatives, represented by
wherein Z represents cyclobutyl, 1-methylcyclopentyl or pyrrolidin-1-yl, 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.
Type:
Grant
Filed:
June 28, 2000
Date of Patent:
September 18, 2001
Assignee:
Merck Sharp & Dohme Limited
Inventors:
Timothy Harrison, Timothy Jason Sparey, Martin Richard Teall
Abstract: Compounds according to Formula (I) or a salt thereof are selective ligands for GABAA receptors useful for treatment of disorders of the central nervous system: 1
Type:
Application
Filed:
January 4, 2001
Publication date:
August 30, 2001
Applicant:
MERCK SHARP & DOHME LIMITED
Inventors:
Ian James Collins, Stephen Robert Fletcher, Timothy Harrison, Paul David Leeson, Christopher Richard Moyes, Alan John Nadin, Michael Rowley, Timothy Jason Sparey, Martin Richard Teall
Abstract: The present invention provides methods for the treatment or prevention of cognitive disorders which comprises oral administration of an orally active, long acting, CNS-penetrant NK-1 receptor antagonist and pharmaceutical compositions comprising such a NK-1 receptor antagonist.
Type:
Grant
Filed:
May 24, 1999
Date of Patent:
August 7, 2001
Assignee:
Merck Sharp & Dohme Limited
Inventors:
Raymond Baker, Jason Matthew Elliott, Neil Roy Curtis, Timothy Harrison, Gregory John Hollingworth, Janusz Jozef Kulagowski, Philip Stephen Jackson, Nadia Melanie Rupniak, Eileen Mary Seward, Brian John Williams, Christopher John Swain
Abstract: A pharamceutical composition comprises a compound of formula (I) or a pharmaceutically acceptable salt thereof, wherein A is C1-6alkyl, C2-6alkenyl, C2-6-alkynyl, C3-6-cycloalkyl, arylC1-6alkyl, aryl, S(O)pR1.
Type:
Grant
Filed:
April 16, 1999
Date of Patent:
July 17, 2001
Assignee:
Merck Sharp & Dohme Limited
Inventors:
Howard Barff Broughton, Mark Stewart Chambers, Sarah Christine Hobbs, Angus Murray MacLeod, Austin John Reeve
Abstract: Substituted triazolo-pyridazine derivative compounds represented by
wherein the variables are disclosed herein are selective ligands for GABA-A receptors, particularly for the &agr;2 and/or &agr;3 subunits.
Type:
Grant
Filed:
November 10, 1998
Date of Patent:
July 3, 2001
Assignee:
Merck Sharp & Dohme Limited
Inventors:
Howard Barff Broughton, William Robert Carling, Jose Luis Castro Pineiro, Alexander Richard Guiblin, Andrew Madin, Kevin William Moore, Michael Geoffrey Russell, Leslie Joseph Street
Abstract: The present invention relates to compounds of formula (I), wherein R1 represents a fluoroC1-2alkoxy group; and R2 represents a hydrogen or halogen atom or a C1-4alkyl, C1-4alkoxy, fluoroC1-4alkyl or fluoroC1-4alkoxy group; or a pharmaceutically acceptable salt thereof. The compounds are of particular use in the treatment or prevention of pain or inflammation, migraine, emesis, postherpetic neuralgia, depression or anxiety.
Abstract: Substituted 1,2,4-Triazolo[3,4-A]phthalazine derivatives are GABA Alpha 5 ligands and are represented by the formula
Type:
Grant
Filed:
November 12, 1998
Date of Patent:
March 13, 2001
Assignee:
Merck Sharp & Dohme Limited
Inventors:
William Robert Carling, Tamara Ladduwahetty, Angus Murray MacLeod, Kevin John Merchant, Kevin William Moore, Francine Sternfeld, Leslie Joseph Street
Abstract: This invention relates to methods and compositions for treating pain and nociception in a patient by administering a combination of a morpholine or thiomorpholine tachykinin antagonist and an opioid analgesic.
Abstract: Pyrazolo[4,3-c]pyridazin-3-one analogues, represented by
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: The present invention relates to the use of an NK-1 receptor antagonist and a selective serotonin reuptake inhibitor for the treatment or prevention of obesity.
Abstract: The present invention provides compounds of formula (I) or pharmaceutically acceptable salts thereof: ##STR1## where A is C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, C.sub.3-6 cycloalkyl, arylC.sub.1-6 alkyl, aryl, S(O),R.sup.1, OR.sup.1 or NR.sup.1 R.sup.6 ;R.sup.1 is hydrogen; C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, C.sub.3-6 cycloalkyl or C.sub.3-6 cycloalkenyl each of which is optionally substituted by amino, C.sub.1-6 alkylamino, di(C.sub.1-6 alkyl)amino, C.sub.1-6 alkoxy, C.sub.1-6 alkylaminocarbonyl, one, two or three hydroxy groups, one, two or three halogen atoms or a four, five or six-membered saturated heterocyclic ring containing a nitrogen atom and optionally either an oxygen atom or a further nitrogen atom which ring is optionally substituted by C.sub.1-4 alkyl on the further nitrogen atom; aryl, arylC.sub.1-6 alkyl, arylC.sub.2-6 alkenyl or arylC.sub.2-6 alkynyl optionally substituted on the aryl ring by halogen, nitro, cyano, C.sub.
Type:
Grant
Filed:
April 22, 1999
Date of Patent:
December 5, 2000
Assignee:
Merck Sharp & Dohme Limited
Inventors:
Howard Barff Broughton, Mark Stuart Chambers
Abstract: The present invention provides the use of an orally active, long acting, CNS-penetrant NK-1 antagonist for the manufacture of a medicament for oral administration for the treatment or prevention of movement disorders, methods of treatment using such a NK-1 receptor antagonist and pharmaceutical compositions comprising it.
Abstract: The present invention provides compounds of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein A is C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, C.sub.3-6 cycloalkyl, arylC.sub.1-6 alkyl, aryl, S(O).sub.p R.sup.1, OR.sup.1 or NR.sup.1 R.sup.12 ;B is optionally substituted 5- or 6-membered heteroaromatic ring or C(O)NR.sup.10 R.sup.11 ;R.sup.1 is hydrogen, optionally substituted C.sub.1-6 alkyl, C.sub.2-6 alkenyl, C.sub.2-6 alkynyl, C.sub.3-6 cycloalkyl or C.sub.3-6 cycloalkenyl, optionally substituted aryl, arylC.sub.1-6 alkyl, arylC.sub.2-6 alkenyl or arylC.sub.2-6 alkynyl or an optionally substituted 5- or 6-membered heteroaromatic ring;R.sup.2 and R.sup.3 are hydrogen or C.sub.1-6 alkyl;R.sup.4 is hydrogen, C.sub.1-8 alkyl, C.sub.2-8 alkenyl, C.sub.2-8 alkynyl, aryl or CH.sub.2 (CO).sub.m NR.sup.8 R.sup.9 ;R.sup.5 is NR.sup.6 R.sup.7, C.sub.1-6 alkyl or C.sub.1-6 alkoxy;R.sup.6 is independently as defined for R.sup.4 ;R.sup.
Type:
Grant
Filed:
April 22, 1999
Date of Patent:
November 7, 2000
Assignee:
Merck Sharp & Dohme Limited
Inventors:
Howard Barff Broughton, Mark Stuart Chambers