Patents Assigned to Pfizer
  • Patent number: 6232304
    Abstract: Compositions of matter comprising a pharmaceutically acceptable salt of an aryl-heterocyclic compound, such as ziprasidone, in a cyclodextrin. Preferred cyclodextrins are SBECD and HPBCD. The composition can comprise a dry mixture, a dry inclusion complex or an aqueous solution. The salt/cyclodextrin inclusion complex preferably provides an amount of ziprasidone of at least 2.5 mgA/ml when the complex is dissolved in water at 40% w/v. A variety of ziprasidone salts are preferred, including the mesylate, esylate, besylate, tartrate, napsylate, and tosylate.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: May 15, 2001
    Assignee: Pfizer Inc.
    Inventors: Yesook Kim, Kevin C. Johnson, Ravi M. Shanker
  • Patent number: 6232500
    Abstract: This invention relates to a novel improved process for preparation of N-[4-(3,4-dichlorophenyl)-3,4-dihydro-1(2H)-naphthalenylidene]methanamine from 4-(3,4-dichloro-phenyl)-3,4-dihydro-1(2H)-naphthalenone and monomethylamine.
    Type: Grant
    Filed: September 2, 1999
    Date of Patent: May 15, 2001
    Assignee: Pfizer Inc
    Inventors: Juan Carlos Colberg, David Michael Pfisterer, Geraldine Patricia Taber
  • Patent number: 6232476
    Abstract: This invention provides an improved process for cis-1-{2-[4-(6-methoxy-2-phenyl-1,2,3,4-tetrahydronaphthalen-1-yl)phenoxy]ethyl}pyrrolidine which is an intermediate for the preparation of (-)cis-6-phenyl-5-[4-(2-pyrrolidin-1-yl-ethoxy)-phenyl]-5,6,7,8-tetrahydronaphthalene-2-ol which is useful for the treatment of osteoporosis.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: May 15, 2001
    Assignee: Pfizer Inc.
    Inventor: Charles K. F. Chiu
  • Patent number: 6231833
    Abstract: Substituted pyrido[1,2-a]pyrazines of general formula I; wherein Ar and Ar1 represent various carbocyclic and heterocyclic aromatic rings; A represents O, S, SO, SO2, CHOH, C═O, or —(CR3R4); and n is 0-2, as well as precursors thereto, are ligands for dopamine receptor subtypes and serotonin (5HT) within the body and are therefore useful in the treatment of disorders of the dopamine and serotonin systems:
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: May 15, 2001
    Assignee: Pfizer Inc
    Inventors: Kishor A. Desai, Anton F. J. Fliri, Mark A. Sanner
  • Patent number: 6229025
    Abstract: The present invention relates to a process for alkylating hindered sulfonamides by Michael addition to propiolates, and to novel intermediates prepared in said process. The products of these reactions can be converted into pharmaceutical compounds useful in the treatment of disease states mediated by matrix metalloproteinase enzymes. Novel intermediates prepared according to the present invention include compounds of the formula wherein R1 is (C1-C6)alkyl or optionally substituted benzyl; R2 and R3 are independently (C1-C6)alkyl or R2 and R3 are taken together to form a three to seven membered cycloalkyl, pyran-4-yl ring or a bicyclo ring of the formula wherein the asterisk indicates the carbon atom common to R2 and R3; and group Q is as herein described.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: May 8, 2001
    Assignee: Pfizer Inc
    Inventor: Joel Michael Hawkins
  • Patent number: 6225339
    Abstract: This invention provides terpenoid lactone compounds, and processes for producing the terpenoid lactone compounds, which comprise cultivating Oidiodedron griseum FERM BP-5778 and then isolating the terpenoid lactone compounds from the fermentation broth. The present invention also provides a pharmaceutical composition comprising the terpenoid lactone compound, which is useful in the treatment of IL-1 and TNF mediated diseases or the like.
    Type: Grant
    Filed: January 15, 1999
    Date of Patent: May 1, 2001
    Assignee: Pfizer Inc.
    Inventors: Hiroyuki Nishida, Masaya Ikunaka, Nobuji Yoshikawa, Katsuomi Ichikawa, Nakao Kojima
  • Patent number: 6225315
    Abstract: The present invention relates to methods for treating nitrate-induced tolerance in a mammal by administering a nitrate-induced tolerance treating amount of a compound of formulae (I), (II), (III) (IV), (V), (VI), (VII), (VIII), (IX), (XA) or (XB) as defined herein, or the pharmaceutically acceptable salts, prodrugs, polymorphs, hydrates, solvates, active metabolites or stereoisomers thereof. The invention also relates to pharmaceutical compositions for the treatment of nitrate-induced tolerance in a mammal comprising a nitrate-induced tolerance treating amount of a compound of formulae (I), (II), (III) (IV), (V), (VI), (VII), (VIII), (IX), (XA) or (XB) as defined herein, or the pharmaceutically acceptable salts, prodrugs, polymorphs, hydrates, solvates, active metabolites or stereoisomers thereof, and a pharmaceutically acceptable vehicle, diluent or carrier.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: May 1, 2001
    Assignee: Pfizer INC
    Inventor: Peter Ellis
  • Patent number: 6225351
    Abstract: Compounds of formula (I) and pharmaceutically acceptable salts thereof, wherein R1, R2, AA and Y are as defined herein, inhibit phosphodiesterase type IV or inhibit the production of tumor necrosis factor, and therefore are useful in the treatment of certain conditions and diseases including asthma, arthritis, and sepsis.
    Type: Grant
    Filed: July 6, 1998
    Date of Patent: May 1, 2001
    Assignee: Pfizer Inc.
    Inventor: Edward F. Kleinman
  • Patent number: 6225318
    Abstract: This invention relates to certain 4-aminoquinazoline derivatives of the formula and their pharmaceutically acceptable salts wherein R1, Q1, m, n, and Z are defined as in the specification. The compounds of formula I and pharmaceutically acceptable salts are useful for the treatment of hyperproliferative disorders and conditions in mammals.
    Type: Grant
    Filed: November 26, 1999
    Date of Patent: May 1, 2001
    Assignee: Pfizer Inc
    Inventors: Susan B. Sobolov-Jaynes, Lee D. Arnold
  • Patent number: 6221899
    Abstract: This invention provides terpenoid lactone compounds, and processes for producing the terpenoid lactone compounds, which comprise cultivating Oidiodedron griseum FERM BP-5778 and then isolating the terpenoid lactone compounds from the fermentation broth. The present invention also provides a pharmaceutical composition comprising the teipenoid lactone compound, which is useful in the treatment of IL-1 and TNF mediated diseases or the like.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: April 24, 2001
    Assignee: Pfizer Inc.
    Inventors: Hiroyuki Nishida, Masaya Ikunaka, Nobuji Yoshikawa, Katsuomi Ichikawa, Nakao Kojima
  • Patent number: 6221402
    Abstract: A rapidly-releasing and taste-masking pharmaceutical dosage form and a process for preparing such oral dosage form are disclosed.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: April 24, 2001
    Assignee: Pfizer Inc.
    Inventors: Akinori Itoh, Toshiyuki Niwa
  • Patent number: 6218397
    Abstract: A compound of the formula: and the pharmaceutically acceptable acid addition salts thereof, wherein A is NR1R2, CR1R2R11, or C(═CR1R12)R2, NHCR1R2R11, OCR1R2R11, SCR1R2R11, NHNR1R2, CR2R11NHR1, CR2R11OR1, CR2R11SR1 or C(O)R2; wherein the rest of the variables are herein below defined, used for inflammatory disorders.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: April 17, 2001
    Assignee: Pfizer Inc
    Inventor: Yuhpyng Liang Chen
  • Patent number: 6214870
    Abstract: The present invention relates to dioxocyclopentyl hydroxamide derivatives of the formula wherein X, Z and Q are as defined in the specification, and to pharmaceutical compositions and methods of treatment thereof.
    Type: Grant
    Filed: March 28, 2000
    Date of Patent: April 10, 2001
    Assignee: Pfizer Inc
    Inventors: Kim F. McClure, Ralph P. Robinson
  • Patent number: 6214872
    Abstract: A compound of the formula wherein X, Y, R1 and R2 are as defined above, useful in the treatment of arthritis or cancer and other diseases involving selective inhibition of matrix metaloproteinase-13.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: April 10, 2001
    Assignee: Pfizer Inc.
    Inventor: Ralph Pelton Robinson
  • Patent number: 6211223
    Abstract: The invention provides S-(+)-3-{1-(1,3-benzodioxol-5-yl)-2-[(2-methoxy-4-methylphenyl)sulfonylamino]-2-oxoethyl}-1-methyl-1H-indole-6-carboxylic acid, which is substantially free from its (R)-(−)-enantiomer, and pharmaceutically acceptable derivatives thereof. The compounds are useful in the treatment of inter alia acute renal failure, restenosis and pulmonary hypertension.
    Type: Grant
    Filed: April 18, 2000
    Date of Patent: April 3, 2001
    Assignee: Pfizer Inc.
    Inventors: Stephen Challenger, Kevin Neil Dack, Andrew Michael Derrick, Roger Peter Dickinson, David Ellis, Yousef Hajikarimian, Kim James, David James Rawson
  • Patent number: 6211222
    Abstract: The invention relates to compounds of the formula I and pharmaceutically acceptable salts thereof, wherein R2a and R2b are independently selected from the group consisting essentially of hydrogen and hereinafter recited substituents, provided that one, but not both of R2a and R2b must be independently selected as hydrogen, wherein said substituents comprise: wherein the dashed lines in formulas (Ia) and (Ib) independently and optionally represent a single or double bond, provided that in formula (Ia) both dashed lines cannot both represent double bonds at the same time; and R, R1, R3, R4, R5, R6, R7, R18 and m are as defined. The invention further relates to intermediates for the preparation of the compounds of formula I, and to pharmaceutical compositions containing, and methods of using, the compounds of formula I, or acceptable salts thereof, for the inhibition of phosphodiesterase (PDE) type IV or the production of tumor necrosis factor (TNF) in a mammal.
    Type: Grant
    Filed: November 4, 1997
    Date of Patent: April 3, 2001
    Assignee: Pfizer Inc
    Inventor: Anthony Marfat
  • Patent number: 6211208
    Abstract: The present invention relates to 2-aminopyridine derivatives of the formula I: or pharmaceutically acceptable salts thereof, wherein A and B are each independently H, or together, A and B form a ring fused to the phenyl ring, said ring being saturated or unsaturated and containing from 5 to 7 ring member atoms, where said ring member atoms may optionally comprise from 1 to 2 heteroatoms selected independently from the group consisting of N, O or S, provided that no two adjacent ring members are heteroatoms; X is oxygen or a single bond; Y is (C1-C6)alkyl; R1 is hydrogen, (C1-C6)alkyl or a (C1-C6 alkyl) group substituted with —NR2R3 wherein R2 and R3 are either selected independently from the group consisting of H, alkyl, aryl, aralkyl or tetrahydronaphthalene, wherein said aryl group or said aryl moiety of said aralkyl group is phenyl or naphthyl, said alkyl group or said alkyl moiety of said aralkyl group contains from one to six carbon atoms and is straight-chained or branched,
    Type: Grant
    Filed: February 15, 2000
    Date of Patent: April 3, 2001
    Assignee: Pfizer Inc
    Inventor: John A. Lowe, III
  • Patent number: 6207664
    Abstract: This invention relates to certain squalene synthetase inhibitors useful as hypocholesterolemic agents, hypotriglyceridemic agents, antiatherosclerosis agents, antifungal agents, anti-Alzheimer's agents or anti-acne agents.
    Type: Grant
    Filed: November 16, 1999
    Date of Patent: March 27, 2001
    Assignee: Pfizer Inc.
    Inventors: Cheryl M. Hayward, Douglas A. Scully
  • Patent number: 6207829
    Abstract: A process is provided for the preparation of a compound of formulae (IA) (sidenafil) and (IB) comprising reacting a compound of formula (IIA) and (IIB) respectively in the presence of —OR, wherein R in the case of formation of compound (IA) is CH2CH3 and R in the case of formation of compound (IB) is CH2CH2CH3, where X is a leaving group:
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: March 27, 2001
    Assignee: Pfizer Inc.
    Inventors: Peter James Dunn, Philip Charles Levett
  • Patent number: D440871
    Type: Grant
    Filed: March 23, 1999
    Date of Patent: April 24, 2001
    Assignee: Pfizer Inc
    Inventor: Julian Belkap Lo