Patents by Inventor Alexander Roderick MacKenzie
Alexander Roderick MacKenzie 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: 20040087599Abstract: Pyrazolopyrimidine compounds which are selective inhibitors of cGMP PDE are useful in the treatment of erectile dysfunction (impotence) in male animals, including man.Type: ApplicationFiled: October 27, 2003Publication date: May 6, 2004Applicant: Pfizer IncInventors: Simon Fraser Campbell, Alexander Roderick Mackenzie, Anthony Wood
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Patent number: 6656945Abstract: 6-heterocyclyl pyrazolo [3,4-d]pyrimidin-4-one compounds which are selective inhibitors of cGMP PDE are useful in the treatment of erectile dysfunction (impotence) in male animals, including man.Type: GrantFiled: June 13, 2001Date of Patent: December 2, 2003Assignee: Pfizer IncInventors: Simon Fraser Campbell, Alexander Roderick MacKenzie, Anthony Wood
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Publication number: 20010044441Abstract: 6-heterocyclyl pyrazolo [3,4-d]pyrimidin-4-one compounds which are selective inhibitors of cGMP PDE are useful in the treatment of erectile dysfunction (impotence) in male animals, including man.Type: ApplicationFiled: June 13, 2001Publication date: November 22, 2001Inventors: Simon Fraser Campbell, Alexander Roderick Mackenzie, Anthony Wood
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Patent number: 6300335Abstract: 4-aminoquinazoline derivatives which are selective inhibitors of cGMP PDE are useful in the treatment of erectile dysfunction (impotence) in male animals, including man.Type: GrantFiled: May 22, 1997Date of Patent: October 9, 2001Assignee: Pfizer Inc.Inventors: Simon Fraser Campbell, Alexander Roderick Mackenzie, Anthony Wood
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Patent number: 6262075Abstract: The present invention provides compounds of formula (I) and the pharmaceutically acceptable acid addition salts thereof, wherein X is a direct link or C1-C4 alkylene; and R is C3-C7 cycloalkyl optionally substituted by 1 or 2 substituents each independently selected from fluoro and C3-C7 cycloalkyl: with the proviso that X is not methylene when R is cyclopropyl, together with processes for the preparation of, intermediates used in the preparation of, compositions containing and uses of, such compounds. These compounds are useful as tachykinin antagonists.Type: GrantFiled: July 20, 1998Date of Patent: July 17, 2001Assignee: Pfizer IncInventors: Alexander Roderick MacKenzie, Allan Patrick Marchington, Donald Stuart Middleton, Sandra Dora Meadows
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Patent number: 6242438Abstract: The present invention provides compounds of formula (I) and the pharmaceutically acceptable salts thereof. Such compounds and salts are tachykinin antagonists.Type: GrantFiled: June 1, 1998Date of Patent: June 5, 2001Assignee: Pfizer Inc.Inventors: Alexander Roderick MacKenzie, Allan Patrick Marchington, Donald Stuart Middleton, Sandra Dora Meadows
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Patent number: 6071938Abstract: A compound of the formula: ##STR1## or a pharmaceutically acceptable salt thereof, wherein X, O R, R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are defined in the specification; compositions containing such compounds; intermediates used in the preparation of such compounds; and methods for treating a disease associated with the altered tone and/or motility of smooth muscle, for example chronic obstructive airways disease, asthma, urinary incontinence, irritable bowel syndrome, diverticular disease, oesophageal achalasia, and hypertension.Type: GrantFiled: April 9, 1999Date of Patent: June 6, 2000Assignee: Pfizer Inc.Inventors: Alexander Roderick MacKenzie, Sandra Marina Monaghan
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Patent number: 6034082Abstract: Compounds of formula (I) ##STR1## and salts thereof, wherein: R.sup.1 is C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.3 -C.sub.7 cycloalkyl(C.sub.1 -C.sub.4)alky aryl or aryl(C.sub.1 -C.sub.4)alkyl; wherein the C.sub.1 -C.sub.6 alkyl group is optionally substituted by fluorine and the C.sub.3 -C.sub.7 cycloalkyl or C.sub.3 -C.sub.7 cycloalkyl(C.sub.1 -C.sub.4)alkyl group is optionally substituted in the cycloalkyl ring by up to two substituents each independently selected from halo, C.sub.1 -C.sub.4 alkoxy or halo(C.sub.1 -C.sub.4)alkoxy; R.sup.2 is phenyl optionally substituted with one or two halo substituents or is indolyl, thienyl, benzothienyl or naphthyl; R.sup.3 is NH.sub.2,--NR.sup.4 SO.sub.2 (C.sub.1 -C.sub.6 alkyl), --NR.sup.4 SO.sub.2 aryl, --NR.sup.4 SO.sub.2 N(R.sup.4).sub.2, NR.sup.4 CO(C.sub.1 -C.sub.6 alkyl), --NR.sup.4 CO aryl or a group or formula (a) ##STR2## wherein W is O, NR.sup.5, CH(OH), CHCO.sub.2 H, CHN(R.sup.4).sub.2, CHF, CF.sub.2, C.dbd.O or CH.sub.2 ; R.sup.Type: GrantFiled: May 13, 1998Date of Patent: March 7, 2000Assignee: Pfizer Inc.Inventors: Alexander Roderick MacKenzie, Allan Patrick Marchington, Donald Stuart Middleton, Sandra Dora Meadows
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Patent number: 6022971Abstract: The present invention provides compounds of the formula (I): ##STR1## and the pharmaceutically acceptable salts thereof, wherein R is C.sub.3 -C.sub.7 cycloalkyl, aryl or C.sub.1 -C.sub.6 alkyl, said C.sub.1 -C.sub.6 alkyl being optionally substituted by fluoro, --COOH, --COO(C.sub.1 -C.sub.4) alkyl, C.sub.3 -C.sub.7 cycloalkyl, adamantyl, aryl or het.sup.1, and said C.sub.3 -C.sub.7 cycloalkyl being optionally substituted by 1 or 2 substituents each independently selected from C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.1 -C.sub.4 alkoxy, hydroxy, fluoro, fluoro(C.sub.1 -C.sub.4) alkyl and fluoro(C.sub.1 -C.sub.4)alkoxy;R.sup.1 is phenyl, benzyl, naphthyl, thienyl, benzothienyl or indolyl, each optionally substituted by 1 or 2 substituents each independently selected from C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halo and trifluoromethyl;R.sup.2 represents various groups;X is C.sub.1 -C.sub.4 alkylene; andX.sup.1 is a direct link or C.sub.1 -C.sub.6 alkylene.Type: GrantFiled: January 26, 1998Date of Patent: February 8, 2000Assignee: Pfizer IncInventors: Alexander Roderick MacKenzie, Allan Patrick Marchington, Donald Stuart Middleton, Sandra Dora Meadows
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Patent number: 5977142Abstract: A compound of formula (I) ##STR1## wherein R.sup.1 is C.sub.1-6 alkyl, halo-(C.sub.1-6 alkyl), C.sub.3-7 cycloalkyl, C.sub.2-6 alkylnyl, hydroxy-(C.sub.2-6 alkylnyl), (C.sub.1-4 alkoxy)-(C.sub.2-6 alkylnyl), aryl, aryl-(C.sub.1-4 alkyl), heteroaryl or heteroaryl-(C.sub.1-4 alkyl); R.sup.2 is H or C.sub.1-4 alkyl; R.sup.3 is aryl, heteroaryl, 2,3-dihydrobenzofuranyl or C.sub.4-7 cycloalkyl; X is O or S; Y is bond, --CH.sub.2 --, --(CH.sub.2).sub.2 -- or --CH.sub.2 O--, a pharmaceutically acceptable salt thereof, which are useful muscarinic receptor antagonists in treaatment of e.g. irritable bowel syndrome, urinary incontinence, etc.Type: GrantFiled: July 31, 1998Date of Patent: November 2, 1999Assignee: Pfizer Inc.Inventors: Robert John Bass, Alexander Roderick MacKenzie, Anthony Wood
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Patent number: 5968923Abstract: The present invention provides compounds of formula (I) and the pharmaceutically acceptable salts thereof, wherein R is C.sub.3 -C.sub.7 cycloalkyl, aryl or C.sub.1 -C.sub.6 alkyl, said C.sub.1 -C.sub.6 alkyl, said C.sub.1 -C.sub.6 alkyl being optionally substituted by fluoro, COOH, --COO(C.sub.1 -C.sub.4 alkyl), C.sub.3 -C.sub.7 cycloalkyl, adamantyl, aryl or het.sup.1, and said C.sub.3 -C.sub.7 cycloalkyl being optionally substituted by 1 or 2 substituents each independently selected from C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.1 -C.sub.4 alkoxy, hydroxy, fluoro, fluoro (C.sub.1 -C.sub.4) alkyl and fluoro (C.sub.1 -C.sub.4) Alkoxy; R.sub.1 is phenyl, naphthyl, thienyl, benzothienyl or indolyl, each optionally substituted by 1 or 2 substituents each independently selected from C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halo and trifluormethyl; R.sup.2 is --CO.sub.2 H, --CONR.sup.3 R.sup.4, --CONR.sup.5 (C.sub.3 -C.sub.7 cycloalkyl), --NR.sup.5 (C.sub.2 -C.sub.5 alkanoyl), --NR.sup.Type: GrantFiled: February 10, 1997Date of Patent: October 19, 1999Assignee: Pfizer Inc.Inventors: Alexander Roderick MacKenzie, Allan Patrick Marchington, Sandra Dora Meadows, Donald Stuart Middleton
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Patent number: 5932594Abstract: A compound of the formula: or a pharmaceutically acceptable salt thereof,wherein Y is a direct link, --(CH.sub.2 --, --(CH.sub.2).sub.2 --, --CH.sub.2 O-- or CH.sub.2 S--; R is --CN or --CONH.sub.2 ;and R.sup.1 is a group of the formula: ##STR1## where R.sup.2 and R.sup.3 are each independently H, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, --(CH.sub.2).sub.n OH, halo, trifluoromethyl, cyano, --(CH.sub.2).sub.n NR.sup.4 R.sup.5, --CO(C.sub.1 -C.sub.4 alkyl), --OCO(C.sub.1 -C.sub.4 alkyl), --CH(OH) (C.sub.1 -C.sub.4 alkyl), --C(OH) (C.sub.1 -C.sub.4 alkyl).sub.2, --SO.sub.2 NH.sub.2, --(CH.sub.2).sub.n CONR.sup.4 R.sup.5 or --(CH.sub.2).sub.n COO(C.sub.1 -C.sub.4 alkyl; R.sub.4 and R.sup.5 are each independently H or C.sub.1 -C.sub.4 alkyl; n is 0, 1 or 2;and "Het" is pyridyl, pyrazinyl or thienyl.The compounds are muscarinic receptor antagonists usedful in the treatment of diseases associated with the altered motility and/or tone of smooth muscle, especially irritable bowel syndrome.Type: GrantFiled: April 24, 1995Date of Patent: August 3, 1999Assignee: Pfizer, Inc.Inventors: Peter Edward Cross, Alexander Roderick MacKenzie
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Patent number: 5912244Abstract: A compound of the formula: ##STR1## or a pharmaceutically acceptable salt thereof, wherein X is O, S or NH;R and R.sup.1 are each independently selected from H and C.sub.1 -C.sub.4 alkyl or taken together represent C.sub.2 -C.sub.6 alkylene;R.sup.2 is H or C.sub.1 -C.sub.4 alkyl;R.sup.3 is a 6-membered heterocyclic ring containing 2N hetero-atoms, said ring being linked to X by a ring carbon atom, optionally benzo-fused and optionally substituted, including in the benzo-fused portion, by C.sub.1 -C.sub.6 alkyl, hydroxy, --OR.sup.5, halo, --S(O).sub.m R.sup.5, oxo, amino, --NHR.sup.5, --N(R.sup.5).sub.2, cyano, --CO.sub.2 R.sup.5, --CONH.sub.2, --CONHR.sup.5 or --CON(R.sup.5).sub.2, with the proviso that R.sup.3 is not an N--(C.sub.1 -C.sub.6 alkyl)pyridonyl group;R.sup.4 is phenyl substituted by a hydroxy group and optionally further substituted by 1 or 2 substitutents each independently selected from hydroxy, C.sub.1 -C.sub.6 alkyl, --OR.sup.5, halo, cyano and nitro;R.sup.5 is C.sub.1 -C.sub.6 alkyl;R.sup.Type: GrantFiled: July 8, 1996Date of Patent: June 15, 1999Assignee: Pfizer Inc.Inventors: Alexander Roderick MacKenzie, Sandra Marina Monaghan
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Patent number: 5846965Abstract: Compounds of the formula: ##STR1## wherein: X is O, NH or NR.sup.1 ; R.sup.1 is C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.3 -C.sub.7 cycloalkyl(C.sub.1 -C.sub.4)alkyl, aryl or aryl (C.sub.1 -C.sub.4)alkyl; wherein the C.sub.1 -C.sub.6 alkyl group is optionally substituted by fluorine and the C.sub.3 -C.sub.7 cycloalkyl or C.sub.3 -C.sub.7 cycloalkyl(C.sub.1 -C.sub.4 )alkyl group is optionally substituted in the cycloalkyl ring by up to two substituents each independently selected from halo, C.sub.1 -C.sub.4 alkoxy or halo(C.sub.1 -C.sub.4)alkoxy; R.sup.2 is phenyl optionally substituted with one or two halo substituents, indolyl or thienyl; R.sup.3 is NH.sub.2, --NR.sup.4 SO.sub.2 (C.sub.1 -C.sub.6 alkyl), --NR.sup.4 SO.sub.2 aryl, --NR.sup.4 CO(C.sub.1 -C.sub.6 alkyl), --NR.sup.4 CO aryl or a 5 to 7-membered N-linked cyclic group incorporating W in the ring wherein W is O, NR.sup.5, CH(OH), CHCO.sub.2 H, CHN(R.sup.4).sub.2, CHF, CF.sub.2, C.dbd.O or CH.sub.2 ; R.sup.4 is H or C.sub.1 -C.sub.Type: GrantFiled: January 24, 1997Date of Patent: December 8, 1998Assignee: Pfizer Inc.Inventors: Alexander Roderick MacKenzie, Allan Patrick Marchington, Sandra Dora Meadows, Donald Stuart Middleton
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Patent number: 5741790Abstract: The present invention provides compounds of the formula (I): ##STR1## and the pharmaceutically acceptable salts thereof, wherein R is C.sub.3 -C.sub.7 cycloalkyl, aryl or C.sub.1 -C.sub.6 alkyl, said C.sub.1 -C.sub.6 alkyl being optionally substituted by fluoro, --COOH, --COO(C.sub.1 -C.sub.4) alkyl, C.sub.3 -C.sub.7 cycloalkyl, adamantyl, aryl or het.sup.1, and said C.sub.3 -C.sub.7 cycloalkyl being optionally substituted by 1 or 2 substituents each independently selected from C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.7 cycloalkyl, C.sub.1 -C.sub.4 alkoxy, hydroxy, fluoro, fluoro(C.sub.1 -C.sub.4) alkyl and fluoro(C.sub.1 -C.sub.4)alkoxy;R.sup.1 is phenyl, benzyl, naphthyl, thienyl, benzothienyl or indolyl, each optionally substituted by 1 or 2 substituents each independently selected from C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halo and trifluoromethyl;R.sup.2 represents various groups;X is C.sub.1 -C.sub.4 alkylene; andX.sup.1 is a direct link or C.sub.1 -C.sub.6 alkylene.Type: GrantFiled: January 27, 1997Date of Patent: April 21, 1998Assignee: Pfizer Inc.Inventors: Alexander Roderick Mackenzie, Allan Patrick Marchington, Donald Stuart Middleton, Sandra Dora Meadows
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Patent number: 5677324Abstract: The present invention relates to compounds of formula (I) and the pharmaceutically acceptable salts thereof, wherein the dashed line represents an optional covalent bond; X is O, NH, S or a direct link; R.sup.3 is hydroxy when the dashed line does not represent a covalent bond and R.sup.3 is absent when the dashed line represents a covalent bond; R.sup.4 is (a), when X is O, a group of formula (i), (b), when X is O, NH or S, optionally substituted hydroxyphenyl, (c) an optionally substituted 4- to 7-membered heterocyclic ring, or (d), when X is NH, a group of formula (ii). The compounds are useful for the treatment of disease associated with the altered tone or motility of smooth muscle.Type: GrantFiled: August 4, 1995Date of Patent: October 14, 1997Assignee: Pfizer Inc.Inventors: Alexander Roderick Mackenzie, Sandra Marina Monaghan