Patents Represented by Attorney, Agent or Law Firm P. C. Richardson
  • Patent number: 7012078
    Abstract: The present invention relates to 2-aminopyridine derivatives of the formula wherein G, R1 and R2 are defined as in the specification, that exhibit activity as nitric oxide synthase (NOS) inhibitors, to pharmaceutical compositions containing them and to their use in the treatment and prevention of central nervous system and other disorders.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: March 14, 2006
    Assignee: Pfizer Inc.
    Inventor: John Adams Lowe, III
  • Patent number: 6949575
    Abstract: The present invention provides compounds of Formula (I) and a method of treating Alzheimer's disease using a compound of Formula (I), wherein: R1 and R2 include alkyl and phenylalkyl; R3 is hydrogen or alkyl; and R4 and R5 include alkyl, alkoxy, carboxyl, alkoxycarbonyl, and nitro. Also provided is a method of inhibiting the aggregation of amyloid proteins using a compound of Formula (I) and a method of imaging amyloid deposits using compounds of Formula (I).
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: September 27, 2005
    Assignee: Pfizer Inc.
    Inventors: Nancy Sue Barta, Christopher Franklin Bigge
  • Patent number: 6878848
    Abstract: A process for interconverting a mixture of cis-trans isomers of a compound of formula I into the substantially pure cis isomer. Cis isomers of formula I are useful intermediates in the synthesis of cis isomers of benzamide piperidine compounds which exhibit activity as NK-1 receptor antagonists.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: April 12, 2005
    Assignee: Pfizer Inc
    Inventors: John Michael Humphrey, Norma Jacqueline Tom
  • Patent number: 6809094
    Abstract: The present invention relates to a method of treating disorders of the Central Nervous System (CNS) and other disorders in a mammal, including a human, by administering to the mammal a CNS-penetrant &agr;7 nicotinic receptor agonist. It also relates to pharmaceutical compositions containing a pharmaceutically acceptable carrier and a CNS-penetrant &agr;7 nicotinic receptor agonist.
    Type: Grant
    Filed: August 28, 2002
    Date of Patent: October 26, 2004
    Assignee: Pfizer Inc
    Inventors: Brian Thomas O'Neill, Jotham Wadsworth Coe, Christopher J. O'Donnell
  • Patent number: 6803470
    Abstract: The present invention relates to the compounds 6-[4-(N-methyl-3-azetidinoxy)-5-ethyl-2-methoxy-phenyl]-pyridin-2-ylamine, 6-[4-(N,N-dimethylaminomethyl)-5-ethyl-2-methoxy-phenyl]-pyridin-2-ylamine, 6-[4-(N-methylaminomethyl)-5-ethyl-2-methoxy-phenyl]-pyridin-2-ylamine and 6-[4-(3-azetidinoxy)-5-ethyl-2-methoxy-phenyl]-pyridin-2-ylamine, and the pharmaceutically acceptable salts thereof, to pharmaceutical compositions containing such compounds and to the use of such compounds in the treatment and prevention of central nervous system and other disorders.
    Type: Grant
    Filed: October 8, 2002
    Date of Patent: October 12, 2004
    Assignee: Pfizer Inc
    Inventors: John A. Lowe, III, Robert A. Volkmann
  • Patent number: 6794388
    Abstract: The present invention is directed to the succinate salts of 5,7,13-triazatetracyclo[9.3.1.02,10.04,8]-pentadeca-2(10),3,5,8-tetraene and pharmaceutical compositions thereof. The invention is also directed to a process for preparation of the succinate salts.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: September 21, 2004
    Assignee: Pfizer Inc.
    Inventors: George J. Quallich, Lewin T. Wint
  • Patent number: 6787549
    Abstract: The present invention is directed to the citrate salt of 5,8,14-triazatetracyclo[10.3.1.02,11.04,9]-hexadeca-2(11),3,5,7,9-pentaene: and pharmaceutical compositions thereof. The present invention is also directed to the various forms of the citrate salt, particularly its hydrate and its anhydrous/nearly anhydrous polymorph. The invention is also directed to processes for preparation of these citrate salt forms.
    Type: Grant
    Filed: May 6, 2002
    Date of Patent: September 7, 2004
    Assignee: Pfizer Inc.
    Inventors: Phillip J. Johnson, Peter R. Rose, Glenn R. Williams, Lewin T. Wint
  • Patent number: 6756385
    Abstract: The invention provides compounds of formula 1 wherein R1, R2, R3, and R4 are as defined, and their pharmaceutically acceptable salts. Compounds of formula 1 are indicated to have activity inhibiting cdk5, cdk2, and GSK-3. Pharmaceutical compositions and methods comprising compounds of formula 1 for treating and preventing diseases and conditions comprising abnormal cell growth, such as cancer, and neurodegenerative diseases and conditions and those affected by dopamine neurotransmission.
    Type: Grant
    Filed: July 31, 2001
    Date of Patent: June 29, 2004
    Assignee: Pfizer Inc.
    Inventors: Mark A. Sanner, Chris J. Helal, Christoper B. Cooper, Frank S. Menniti, Michael K. Ahlijanian, Annabella Villalobos, Lit-Fui Lau, Patricia A. Seymour
  • Patent number: 6740757
    Abstract: This invention relates to the enantiomers of 6-[(4-chloro-phenyl)-hydroxy-(3-methyl-3H-imidazol-4-yl)-methyl]-4-[3-(3-hydroxy-3-methyl-but-1-ynyl)-phenyl]-1-methyl-1H-quinolin-2-one, prodrugs thereof, and pharmaceutically acceptable salts and solvates of said compounds and said prodrugs, that are useful in the treatment of hyperproliferative diseases, such as cancers, in mammals. The invention also relates to processes for the production of enantiomerically pure or optically enriched (+)- or (−)-6-[(4-chloro-phenyl)-hydroxy-(3-methyl-3H-imidazol-4-yl)-methyl]-4-[3-(3-hydroxy-3-methyl-but-1-ynyl)-phenyl]-1-methyl-1H-quinolin-2-one enantiomers from a mixture containing two enantiomers using continuous chromatography.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: May 25, 2004
    Assignee: Pfizer Inc
    Inventors: R. Mark Guinn, Subramanian Sam Guhan, Karl K Ng, Derek L. Tickner, Marcus Douglas Ewing, Clifford N. Meltz, Bryan Li, Kees Pouwer
  • Patent number: 6734308
    Abstract: The invention relates to crystal forms of 6-[(4-chloro-phenyl)-hydroxy-(3-methyl-3H-imidazol-4-yl)-methyl]-4-(3-ethynyl-phenyl)-1-methyl-1H-quinolin-2-one, 2,3-dihydroxy butanedioate salts having the formula shown below: and to pharmaceutical compositions containing the above compound, methods of treating hyperproliferative diseases, such as cancers, in mammals, especially humans by administering the above compound, and to methods of preparing the crystal forms of the above compound and related compounds.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: May 11, 2004
    Assignee: Pfizer Inc
    Inventors: Joseph P. Lyssikatos, Derek L. Tickner, Linda S. Newton, Zheng J. Li, Clifford N. Meltz
  • Patent number: 6727283
    Abstract: The present invention provides an essentially nonaqueous, liquid pharmaceutical concentrate composition for oral administration containing sertraline or a pharmaceutically acceptable salt thereof and one or more pharmaceutically acceptable excipients. The present invention also provides a use of this concentrate composition to prepare an aqueous solution of sertraline. In addition, the present invention provides a method of using this concentrate composition to treat or prevent a variety of diseases or conditions. Finally, the present invention provides the compound, (1S-cis)-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-N-methyl-1-naphthalenamine methanesulfonate.
    Type: Grant
    Filed: October 11, 1999
    Date of Patent: April 27, 2004
    Assignee: Pfizer Inc.
    Inventors: Nancy J. Harper, Gautam R. Ranade, Willard M. Welch
  • Patent number: 6720427
    Abstract: The invention provides compounds of formula 1 wherein R1, R3, and R4 are as defined, and their pharmaceutically acceptable salts. Compounds of formula 1 are indicated to have activity inhibiting cdk5, cdk2, and GSK-3. Pharmaceutical compositions and methods comprising compounds of formula 1 for treating diseases and conditions comprising abnormal cell growth, such as cancer, and neurodegenerative diseases and conditions and those affected by dopamine neurotransmission are described.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: April 13, 2004
    Assignee: Pfizer Inc.
    Inventors: Mark A. Sanner, Chris J. Helal, Christopher B. Cooper
  • Patent number: 6716875
    Abstract: This invention relates to compositions and methods for achieving a therapeutic effect such as lowering blood pressure and treating congestive heart failure in a mammal. More specifically, this invention relates to synergistic compositions comprising amounts of at least two therapeutic agents selected from the group consisting of a renin inhibitor, an angiotensin I converting enzyme inhibitor and an angiotensin II antagonist, which inhibitors and antagonists are present in amounts sufficient to cause synergistic therapeutic effects such as lowering blood pressure and treating congestive heart failure in a mammal.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: April 6, 2004
    Assignee: Pfizer Inc.
    Inventor: Anthony Andrea Fossa
  • Patent number: 6706702
    Abstract: The present invention relates to compounds of formula (I) and their pharmaceutically acceptable salts, wherein R1, R2, R3 and Z are as defined herein, intermediates in the synthesis of such compounds, pharmaceutical compositions containing such compounds and methods of using such compounds in the treatment of neurological and psychological disorders.
    Type: Grant
    Filed: August 13, 2002
    Date of Patent: March 16, 2004
    Assignee: Pfizer Inc.
    Inventor: Jotham Wadsworth Coe
  • Patent number: 6677378
    Abstract: The present invention relates to compounds of the formula wherein R1 through R4, X, Y, m and n are defined as in the specification. Such compounds are useful exhibit activity as serotonin, norepinephrine and dopamine reuptake inhibitors, and their pharmaceutically acceptable salts, and their use in the treatment of central nervous system and other disorders.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: January 13, 2004
    Assignee: Pfizer Inc.
    Inventors: Harry R. Howard, Jr., Christopher J. Schmidt, Thomas F. Seeger, Mark L. Elliott
  • Patent number: 6670476
    Abstract: The invention provides a process for the optical resolution of a racemic mixture, or an optically enriched mixture, of trans-7-(hydroxymethyl)octa-hydro-2H-pyrido-1,2a)pyrazine, a key intermediate for preparing pharmacologically active 2,7-substituted octahydro-1H-pyrido[1,2-a]pyrazine derivatives useful in the treatment of disorders of the dopamine system. The process of the invention involves use of D-(−) or L-(+)naproxen as a resolving agent.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: December 30, 2003
    Assignee: Pfizer Inc.
    Inventor: Arthur E. Harms
  • Patent number: 6664258
    Abstract: This invention relates to novel, pharmaceutically active compounds of formula (I) wherein a, b and R1 through R6 are as defined in the specification These compounds exhibit central dopaminergic activity and are useful in the treatment of CNS disorders.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: December 16, 2003
    Assignee: Pfizer Inc
    Inventors: Anton F. J. Fliri, Todd W. Butler
  • Patent number: 6660999
    Abstract: A method and device for mass spectrometry analysis, wherein a mass spectrometer is adapted for use with helium droplets, as an ionization site medium, with a proton being initially captured by a large helium droplet (˜10,000 helium atoms) and then cooled evaporatively to 0.4 Kelvin. The protonated helium droplet then picks up a neutral molecule of interest and the neutral molecule is protonated inside of the droplet with the liquid helium droplet acting as a heat bath to provide rapid cooling of the newly formed protonated molecule. As a result, there is essentially no energy available, at 0.4 Kelvin, for the protonated molecule to fragment. Remaining liquid helium is removed and the stably maintained protonated molecule is detected by a mass spectrometer. Since the molecules do not fragment when protonated (ionized), each compound in a mixture analyses gives one mass and the number of ions of a particular mass detected is directly proportional to the molar percentage of that mass in the sample.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: December 9, 2003
    Assignee: Pfizer Inc.
    Inventor: Raymond J. Bemish
  • Patent number: 6632831
    Abstract: The invention relates to BCAT inhibitors and the use thereof for treating or preventing neuronal loss associated with stroke, ischemia, CNS trauma, hypoglycemia and surgery, as well as treating neurodegenerative diseases including Alzheimer's disease, amyotrophic lateral sclerosis, Huntington's disease and Down's syndrome, treating or preventing the adverse consequences of the overstimulation of the excitatory amino acids, treating anxiety, psychosis, convulsions, aminoglycoside antibiotics-induced hearing loss, migraine headache, chronic pain, neuropathic pain, Parkinson's disease, diabetic retinopathy, glaucoma, CMV retinitis, urinary incontinence, opioid tolerance or withdrawal, and inducing anesthesia, as well as for enhancing cognition.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: October 14, 2003
    Assignee: Pfizer Inc.
    Inventors: Sheryl Jeanne Hays, Lain-Yen Hu, Huangshu Lei, Jeffrey David Scholten, David Juergen Wustrow
  • Patent number: 6630467
    Abstract: Pyridone-fused azabicyclic compounds of the formula and their pharmaceutically acceptable salts and prodrugs, wherein R1, R2 and R3 are defined below, intermediates and methods for their preparation. Compositions and methods for using compounds of the formula I in the treatment of neurological and mental disorders related to a decrease in cholinergic function such as nicotine addiction, Huntington's Chorea, tardive dyskinesia, hyperkinesia, mania, dyslexia, schizophrenia, analgesia, attention deficit disorder (ADD), multi-infarct demetia, age related cognitive decline, epilepsy, neurological and mental disorders related to a decrease in cholinergic function, senile dementia of the Alzheimer's type, Parkinson's disease, attention deficit hyperactivity disorder (ADHD), anxiety, obesity, Tourette's Syndrome and ulcerative colitis.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: October 7, 2003
    Assignee: Pfizer Inc.
    Inventor: Brian T. O'Neill