Patents by Inventor Stuart Chambers
Stuart Chambers has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20030125333Abstract: 1 The present invention provides a compound of formula (I) in which R1 is generally hydrogen or CF3, R2 is generally hydrogen, W is a cyclic amine, a heterocycle or a group L-Y-X where L-Y is a linking portion and X is generally an aromatic or non-aromatic heterocycle, alkyl or alkylcarbonyl and Z is generally a heterocycle such as 5-methylisoxazol-3-yl, and pharmaceutically acceptable salts thereof for enhancing cognition in conditions such as Alzheimer's Disease, pharmaceutical compositions comprising them, their use for manufacturing medicaments and methods of treatment using them.Type: ApplicationFiled: June 14, 2002Publication date: July 3, 2003Inventors: Helen Jane Bryant, Mark Stuart Chambers, Philip Jones, Angus Murray MacLeod, Robert James Maxey
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Publication number: 20030045532Abstract: A class of substituted or 6,7-ring fused [1, 2, 3]triazolo[1,5-&agr;]-pyrimidine derivatives, possessing an optionally substituted cycloalkyl, phenyl or heteroaryl substituent at the 3-position and an amino moiety at the 5-position, are selective ligands for GABAA receptors, in particular having high affinity for the &agr;2 and/or ◯subunit thereof, and are accordingly of benefit in the treatment and/or prevention of disorders of the central nervous system, including anxiety and convulsions.Type: ApplicationFiled: June 14, 2002Publication date: March 6, 2003Inventors: Mark Stuart Chambers, Ian James Collins, Simon Charles Goodacre, David James Hallett, Philip Jones, Linda Elizabeth Keown, Robert James Maxey, Leslie Joseph Street
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Publication number: 20020193385Abstract: 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.Type: ApplicationFiled: March 19, 2002Publication date: December 19, 2002Inventors: Mark Stuart Chambers, Simon Charles Goodacre, David James Hallett, Andrew Jennings, Philip Jones, Richard Thomas Lewis, Kevin William Moore, Michael Geoffrey Neil Russell, Leslie Joseph Street, Helen Jane Szekeres
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Patent number: 6395766Abstract: 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: GrantFiled: November 6, 2000Date of Patent: May 28, 2002Assignee: Merck Sharp & Dohme LimitedInventors: Howard Barff Broughton, Helen Jane Bryant, Mark Stuart Chambers, Neil Roy Curtis
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Patent number: 6395905Abstract: 4-oxo-tetrahydroindozole-3-carboxamide compounds according to Formula (I), or a pharmaceutically acceptable salt thereof, are GABA-A Alpha 5 ligands useful for enhancing cognition:Type: GrantFiled: June 15, 2001Date of Patent: May 28, 2002Assignee: Merck Sharp & Dohme Ltd.Inventors: Helen Jane Bryant, Mark Stuart Chambers
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Patent number: 6355638Abstract: Compounds according to Formula (I) or a salt thereof are GABA-A Alpha 5 ligands useful for enhancing cognition:Type: GrantFiled: November 21, 2000Date of Patent: March 12, 2002Assignee: Merck Sharp & Dohme Ltd.Inventors: Helen Jane Bryant, William Robert Carling, Mark Stuart Chambers, Sarah Christine Hobbs, Philip Jones, Angus Murray MacLeod
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Publication number: 20020002164Abstract: Substituted heterocycles of the general structural formula: 1Type: ApplicationFiled: April 17, 2001Publication date: January 3, 2002Applicant: Merck & Co., Inc.Inventors: Conrad P. Dorn, Paul E. Finke, Jeffrey J. Hale, Malcolm Maccoss, Sander G. Mills, Shrenik K. Shah, Mark Stuart Chambers, Timothy Harrison, Tamara Ladduwahetty, Brian John Williams
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Patent number: 6235735Abstract: Substituted heterocycles of the general structural formula: are tachykinin receptor antagonists useful in the treatment of inflammatory diseases, pain or migraine, asthma and emesis, and calcium channel blockers useful in the treatment of cardiovascular conditions such as angina, hypertension or ischemia.Type: GrantFiled: March 16, 2000Date of Patent: May 22, 2001Assignee: Merck & Co., Inc.Inventors: Conrad P. Dorn, Jeffrey J Hale, Paul E. Finke, Malcolm Maccoss, Sander G. Mills, Shrenik K. Shah, Mark Stuart Chambers, Tamara Ladduwahetty, Timothy Harrison, Brian John Williams
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Patent number: 6156761Abstract: The present invention provides a compound of formula (I) or a pharmaceutically acceptable salt thereof: ##STR1## wherein A, B, R2, R3 and q are as defined in the disclosure, pharmaceutical compositions containing them; methods for their production; their use in therapy and methods of treatment of disease states where cognition enhancement is required, such as Alzheimer's disease.Type: GrantFiled: April 22, 1999Date of Patent: December 5, 2000Assignee: Merck Sharpe & Dohme LimitedInventors: Helen Jane Bryant, Mark Stuart Chambers, Sarah Christine Hobbs
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Patent number: 6156787Abstract: 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: GrantFiled: April 22, 1999Date of Patent: December 5, 2000Assignee: Merck Sharp & Dohme LimitedInventors: Howard Barff Broughton, Mark Stuart Chambers
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Patent number: 6143773Abstract: 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: GrantFiled: April 22, 1999Date of Patent: November 7, 2000Assignee: Merck Sharp & Dohme LimitedInventors: Howard Barff Broughton, Mark Stuart Chambers
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Patent number: 6048859Abstract: Substituted heterocycles of the general structural formula: ##STR1## are tachykinin receptor antagonists useful in the treatment of inflammatory diseases, pain or migraine, asthma and emesis, and calcium channel blockers useful in the treatment of cardiovascular conditions such as angina, hypertension or ischemia.Type: GrantFiled: February 16, 1999Date of Patent: April 11, 2000Assignee: Merck & Co., Inc.Inventors: Conrad P. Dorn, Paul E. Finke, Jeffrey J. Hale, Malcolm Maccoss, Sander G. Mills, Shrenik K. Shah, Mark Stuart Chambers, Timothy Harrison, Tamara Ladduwahetty, Brian John Williams
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Patent number: 5998415Abstract: A class of piperazinones, homopiperazinones and thione analogues thereof, substituted at the 1-position by an optionally substituted alkenyl, alkynyl, aryl-alkyl or heteroaryl-alkyl moiety, and linked at the 4-position via an alkylene spacer to a fused bicyclic heteroaromatic moiety, typically indolyl, are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D.alpha. receptor subtype while possessing at least a 10-fold selective affinity for the 5-HT.sub.1D.alpha. receptor subtype relative to the 5-HT.sub.1D.beta. subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT.sub.1D receptors is indicated, while eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT.sub.1D receptor agonists.Type: GrantFiled: April 17, 1998Date of Patent: December 7, 1999Assignee: Merck Sharp & Dohme Ltd.Inventors: Mark Stuart Chambers, Sarah Christine Hobbs, Leslie Joseph Street
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Patent number: 5981529Abstract: A class of 1-[3-(1H-indol-3-yl)propyl]-4-(2-phenylethyl)piperazine derivatives, substituted at the 5-position of the indole nucleus by a five-membered heteroaromatic moiety, on one or other of the ethylene carbon atoms of the phenethyl moiety by halogen, trifluoromethyl, alkyl, hydroxyalkyl or alkoxyalkyl, and optionally on the phenyl ring of the phenethyl moiety by halogen, trifluoromethyl, alkoxy or an oxazolidinone group and optionally by one or two further substituents, are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D .alpha. receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT.sub.1D .alpha. receptor subtype relative to the 5-HT.sub.1D .beta. subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT.sub.Type: GrantFiled: March 18, 1998Date of Patent: November 9, 1999Assignee: Merck Sharp & Dohme LimitedInventors: Raymond Baker, Mark Stuart Chambers, Sarah Christine Hobbs, Angus Murray MacLeod, Austin John Reeve, Francine Sternfeld, Leslie Joseph Street
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Patent number: 5973156Abstract: A class of substituted piperidine and tetrahydropyridine derivatives, linked through the 4-position thereof via an alkylene chain to a fused bicyclic heteroaromatic moiety such as indolyl, and further substituted at the 1-position by an optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl-alkyl, aryl-alkyl or heteroaryl-alkyl moiety, are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D.spsb..alpha. receptor subtype whilst processing at least a 10-fold selective affinity for the 5-HT.sub.1D.spsb..alpha. receptor subtype relative to the 5-HT.sub.1D.spsb..beta. subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT.sub.1D receptors is indicated, whilst eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT.sub.1D receptor agonists.Type: GrantFiled: May 13, 1998Date of Patent: October 26, 1999Assignee: Merck Sharp & Dome Ltd.Inventors: Mark Stuart Chambers, Sarah Christine Hobbs, Tamara Ladduwahetty, Angus Murray MacLeod, Kevin John Merchant
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Patent number: 5925638Abstract: A class of 1-?3-(1H-indol-3-yl)propyl!-4-benzylpiperazine derivatives of formula I, substituted at the 5-position of the indole nucleus by a 1,2,4-triazol-4-yl moiety, and on the methylene linkage of the benzyl moiety by a range of substituted alkyl groups, are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D.alpha. receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT.sub.1D.alpha. receptor subtype relative to the 5-HT.sub.1D.beta. subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT.sub.1D receptors is indicated, whilst eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT.sub.1D receptor agonists.Type: GrantFiled: April 28, 1998Date of Patent: July 20, 1999Assignee: Merck Sharp & Dohme Ltd.Inventors: Mark Stuart Chambers, Sarah Christine Hobbs, Leslie Joseph Street
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Patent number: 5919783Abstract: Compounds of formula (I), or a salt or prodrug thereof, wherein Z represents an optionally substituted five-membered heteroaromatic ring selected from furan, thiophene, pyrrole, oxazole, thiazole, isoxazole, isothiazole, imidazole, pyrazole, oxadiazole, thiadiazole, triazole, and tetrazole; E represents a chemical bond or a straight or branched alkylene chain containing from 1-4 carbon atoms; Q represents a straight or branched alkylene chain containing from 1-6 carbon atoms; T represents nitrogen or CH; R.sup.1 represents aryl(C.sub.1-6)alkyl or heteroaryl(C.sub.1-6)alkyl, either of which groups may be optionally substituted; and R.sup.2 represents hydrogen or C.sub.1-6 alkyl are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D.alpha. receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT.sub.1D.alpha. receptor subtype relative to the 5-HT.sub.1D.beta.Type: GrantFiled: January 21, 1997Date of Patent: July 6, 1999Assignee: Merck Sharp & Dohme Ltd.Inventors: Mark Stuart Chambers, Victor Giulio Matassa, Leslie Joseph Street
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Patent number: 5872116Abstract: Substituted heterocycles of the general structural formula: ##STR1## are tachykinin receptor antagonists useful in the treatment of inflammatory diseases, pain or migraine, asthma and emesis, and calcium channel blockers useful in the treatment of cardiovascular conditions such as angina, hypertension or ischemia.Type: GrantFiled: October 28, 1997Date of Patent: February 16, 1999Assignee: Merck & Co., Inc.Inventors: Conrad P. Dorn, Paul E. Finke, Jeffrey J. Hale, Malcolm Maccoss, Sander G. Mills, Shrenik K. Shah, Mark Stuart Chambers, Timothy Harrison, Tamara Ladduwahetty, Brian John Williams
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Patent number: 5854268Abstract: A class of substituted azetidine, pyrrolidine and piperidine derivatives are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D.alpha. receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT.sub.1D.alpha. receptor subtype relative to the 5-HT.sub.1D.beta. subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT.sub.1D receptors is indicated, whilst eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT.sub.1D receptor agonists.Type: GrantFiled: January 22, 1997Date of Patent: December 29, 1998Assignee: Merck Sharp & Dohme, Ltd.Inventors: Raymond Baker, Sylvie Bourrain, Jose Luis Castro Pineiro, Mark Stuart Chambers, Alexander Richard Guiblin, Sarah Christine Hobbs, Richard Alexander Jelley, Andrew Madin, Victor Giulio Matassa, Austin John Reeve, Michael Geoffrey Russell, Graham Andrew Showell, Francine Sternfeld, Leslie Joseph Street, Monique Bodil Van Niel
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Patent number: 5849746Abstract: A class of 1,4-disubstituted piperazine derivatives, further substituted on one of the carbon atoms of the piperazine ring, are selective agonists of 5-HT.sub.1 -like receptors, being potent agonists of the human 5-HT.sub.1D.alpha. receptor subtype whilst possessing at least a 10-fold selective affinity for the 5-HT.sub.1D.alpha. receptor subtype relative to the 5-HT.sub.1D.beta. subtype; they are therefore useful in the treatment and/or prevention of clinical conditions, in particular migraine and associated disorders, for which a subtype-selective agonist of 5-HT.sub.1D receptors is indicated, while eliciting fewer side-effects, notably adverse cardiovascular events, than those associated with non-subtype-selective 5-HT.sub.1D receptor agonists.Type: GrantFiled: July 22, 1997Date of Patent: December 15, 1998Assignee: Merck Sharp & Dohme Ltd.Inventors: Mark Stuart Chambers, Angus Murray MacLeod, Victor Giulio Matassa