Patents Represented by Attorney, Agent or Law Firm Mervin E. Brokke
  • Patent number: 5385916
    Abstract: Certain 1-substituted 4-(1,2-benzisoxazolyl)-piperidine compounds exhibit neuroleptic activity and are useful in the treatment of psychosis and anxiety.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: January 31, 1995
    Assignee: Pfizer Inc.
    Inventor: Harry R. Howard, Jr.
  • Patent number: 5384320
    Abstract: Compounds of the formula ##STR1## wherein X is --CH.sub.2 --, --O-- or --S--, m is 1 to 3, n is 1 or 2 and R.sub.1 is hydrogen, C.sub.1 to C.sub.4 alkyl, aryl or aryl substituted with one or more substituents selected independently from the group consisting of halogen, nitro, cyano, C.sub.1 to C.sub.10 alkyl, C.sub.1 to C.sub.10 halosubstituted alkyl, C.sub.1 to C.sub.6 alkoxy, alkoxycarbonyl having from one to ten carbon atoms in the alkoxy moiety, aminocarbonyl, alkylaminocarbonyl having from one to ten carbon atoms in the alkyl moiety and dialkylaminocarbonyl having from one to ten carbon atoms in each of the alkyl moieties, and the pharmaceutically acceptable salts thereof, inhibit the enzyme lipoxygenase and are useful in treating allergy and inflammatory and cardiovascular conditions for which the action of lipoxygenase has been implicated. These compounds form the active ingredient in pharmaceutical compositions for treating such conditions.
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: January 24, 1995
    Assignee: Pfizer Inc
    Inventors: Kazuo Ando, Takafumi Ikeda
  • Patent number: 5371187
    Abstract: A process and intermediates for the manufacture of S-3-methylheptanoic acid from S-citronellol; a novel crystalline form of immunoregulatory N-(S-3-methlylheptanoyl)-D-gamma-glutamyl-glycyl-D-alanine, an immunoregulatory agent; and an improved process and intermediates therefor.
    Type: Grant
    Filed: May 27, 1993
    Date of Patent: December 6, 1994
    Assignee: Pfizer Inc.
    Inventor: Charles W. Murtiashaw
  • Patent number: 5371235
    Abstract: 1S,4S and 1R,4R-2-Alkyl-2,5-diazabicyclo[2.2.1]heptanes useful as intermediates in the synthesis of certain antibacterial quinolones, are prepared respectively, from trans-4-hydroxy-L-proline and trans-4-hydroxy-D-proline via multistep procedures.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: December 6, 1994
    Assignee: Pfizer Inc.
    Inventors: Tamim F. Braish, Darrell E. Fox
  • Patent number: 5356905
    Abstract: 3-Piperidino-1-chromanol derivatives and analogs having the formula ##STR1## wherein A and B are taken together and are --CH.sub.2 CH.sub.2 -- or A and B are taken separately and are each H;X is CH.sub.2 or O;X.sup.1 is H or OH;Z is H, F, Cl, Br or OH;Z.sup.1 is H, F, Cl, Br or (C.sub.1 -C.sub.3)alkyl;n is 0 or 1; andm is 0 or an integer from 1 to 6;pharmaceutical compositions thereof; methods of treating CNS disorders therewith; and intermediates useful in the preparation of said compounds.
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: October 18, 1994
    Assignee: Pfizer Inc.
    Inventor: Todd W. Butler
  • Patent number: 5330998
    Abstract: Hypoglycemic thiazolidine-2,4-dione derivatives of the formula ##STR1## wherein the dotted line represents a bond or no bond;V is --CH.dbd.CH--, --N.dbd.CH--, --CH.dbd.N--, S, O or NR;W is S, SO, SO.sub.2, SO.sub.2 NR.sup.1, NR.sup.1 SO.sub.2, CONR.sup.1 or NR.sup.1 CO;X is S, O, NR.sup.2, --CH.dbd.N-- or --N.dbd.CH;Y is CH or N;Z is hydrogen, (C.sub.1 -C.sub.7)alkyl, (C.sub.3 -C.sub.7)cycloalkyl, phenyl, pyridyl, furyl, thienyl or phenyl mono- or disubstituted with the same or different groups which are (C.sub.1 -C.sub.3)alkyl, trifluoromethyl, (C.sub.1 -C.sub.3)alkoxy, fluoro, chloro or bromo;Z.sup.1 is hydrogen or (C.sub.1 -C.sub.3)alkyl;R, R.sup.1 and R.sup.2 are each independently hydrogen or (C.sub.1 -C.sub.4); andn is 1, 2 or 3;a pharmaceutically acceptable cationic salt thereof; or a pharmaceutically acceptable acid addition salt thereof when the compound contains a basic nitrogen.
    Type: Grant
    Filed: August 14, 1990
    Date of Patent: July 19, 1994
    Assignee: Pfizer Inc.
    Inventors: David A. Clark, Steven W. Goldstein, Bernard Hulin
  • Patent number: 5330997
    Abstract: Certain 1H-indazole-3-acetic acid derivatives, and their pharmaceutically-acceptable esters and salts, are inhibitors of the aldose reductase enzyme, and so are useful in the treatment of diabetic complications.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: July 19, 1994
    Assignee: Pfizer Inc.
    Inventors: Banavara L. Mylari, William J. Zembrowski
  • Patent number: 5326884
    Abstract: Intermediates and a stepwise process for the conversion of D-methionine or certain of its derivatives to optically active compounds of the formula ##STR1## wherein R is (C.sub.1 -C.sub.3)alkyl, phenyl or tolyl. The latter compounds are in turn useful as an intermediate in the preparation of penem antibiotic 5R,6S-6-(1R-hydroxyethyl)-2-(1R-oxo-3S-thiolanylthio)-2-penem-3-carboxylic acid and corresponding pharmaceutically acceptable salts and esters.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: July 5, 1994
    Assignee: Pfizer Inc.
    Inventor: Frank J. Urban
  • Patent number: 5321020
    Abstract: Antibacterial compounds of the formula ##STR1## wherein n is 0 or 1, R is hydrogen or a radical forming an ester hydrolyzable under physiological conditions, and R.sup.1 is hydrogen or methyl; the pharmaceuticallyacceptable cationic salts thereof when R is hydrogen; pharmaceutical compositions thereof; a method of treating bacterial infections therewith; and intermediates useful in the synthesis of said compounds.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: June 14, 1994
    Assignee: Pfizer Inc.
    Inventor: Vytautas J. Jasys
  • Patent number: 5298522
    Abstract: A method of producing analgesia and treating antiinflammatory disease in a human subject while avoiding proteinuria by administering 6-chloro-5-fluoro-3-(2-thenoyl)-2-oxindole-1-carboxamide or a pharmaceutically-acceptable base salt thereof.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: March 29, 1994
    Assignee: Pfizer Inc.
    Inventors: Kelvin Cooper, Bruce H. Littman, Christopher J. Pazoles, Keith D. Wilner
  • Patent number: 5294730
    Abstract: Antidepressant agents having the formula ##STR1## wherein R.sup.1 is a polycycloalkyl group; R.sup.2 is methyl or ethyl, X is O or NH; and Y comprises a 5- or 6-membered heterocyclic ring having one or two nitrogens; or fused bicyclic heterocyclic rings having a total of three nitrogen atoms, one in each ring and one angular nitrogen.
    Type: Grant
    Filed: November 20, 1992
    Date of Patent: March 15, 1994
    Assignee: Pfizer Inc.
    Inventors: Nicholas A. Saccomano, Fredric J. Vinick
  • Patent number: 5286904
    Abstract: Immunoregulatory N-(S-3-alkyl-4-heptenoyl)- and N-(S-3-alkylheptanoyl)-D-gamma-glutamyl-glycyl-D-alanine and esters thereof are synthesized via R-trans-2-hexen-4-ols, R-3-alkyl-4-heptanoic acid and S-3-alkylheptanoic acid.
    Type: Grant
    Filed: April 9, 1993
    Date of Patent: February 15, 1994
    Assignee: Pfizer Inc.
    Inventor: Charles W. Murtiashaw
  • Patent number: 5286857
    Abstract: An efficient, multistep process for the synthesis of certain 6-(1-hydroxyethyl) 2-substituted penem antibiotics from 2-[4R-(triphenylmethylthio)-3S-(1R-(dimethyl-t-butylsilyloxy)ethyl)-2-azet idon-1-yl]acetic acid esters.
    Type: Grant
    Filed: October 9, 1990
    Date of Patent: February 15, 1994
    Assignee: Pfizer Inc.
    Inventors: Brian T. O'Neill, Douglas Phillips
  • Patent number: 5283249
    Abstract: Coccidioidal agents which contain the polyether antibiotic semduramicin and nicarbazin show synergistic effects in poultry.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: February 1, 1994
    Assignee: Pfizer Inc.
    Inventor: Jesse E. Shively
  • Patent number: 5270331
    Abstract: Antiinflammatory and analgesic oxindole prodrugs of the formula ##STR1## wherein R.sup.10, R.sup.11, R.sup.12 and R.sup.13 are hydrogen, alkyl or halogen and R is methyleneoxyalkanoyl, methyleneoxyalkenoyl or alkenoyl.
    Type: Grant
    Filed: January 26, 1993
    Date of Patent: December 14, 1993
    Assignee: Pfizer, Inc.
    Inventors: Wayne E. Barth, Kelvin Cooper, Edward F. Kleinman, Lawrence A. Reiter, Ralph P. Robinson
  • Patent number: 5248820
    Abstract: A process and intermediates for the manufacture of S-3-methylheptanoic acid from S-citronellol; a novel crystalline form of immunoregulatory N-(S-3-methylheptanoyl)-D-gamma-glutamyl-glycyl-D-alanine, an immunoregulatory agent; and an improved process and intermediates therefor.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: September 28, 1993
    Assignee: Pfizer Inc.
    Inventor: Charles W. Murtiashaw
  • Patent number: 5248681
    Type: Grant
    Filed: September 19, 1991
    Date of Patent: September 28, 1993
    Assignee: Pfizer Inc.
    Inventor: Kelvin Cooper
  • Patent number: 5245079
    Abstract: Immunoregulatory N-(S-3-alkyl-4-heptenoyl)- and N-(S-3-alkylheptanoyl)-D-gamma-glutamyl-glycyl-D-alanine and esters thereof are synthesized via R-trans-2-hexen-4-ols, R-3-alkyl-4-heptenoic acid and S-3-alkylheptanoic acid.
    Type: Grant
    Filed: March 17, 1992
    Date of Patent: September 14, 1993
    Assignee: Pfizer Inc.
    Inventor: Charles W. Murtiashaw
  • Patent number: 5242913
    Abstract: Certain 7-beta-[2-(2-amino-4-thiazolyl)-(Z)-2-(chloromethylene)acetamido]-3-[(subs tituted)methyl]-ceph-3-em-4-carboxylic acids, pharmaceutically-acceptable salts thereof and conventional in vivo hydrolyzable esters thereof are valuable as broad spectrum antibacterial agents, particularly useful for the treatment of bacterial infections in man and other mammals.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: September 7, 1993
    Assignee: Pfizer Inc.
    Inventor: Susumu Nakanishi
  • Patent number: 5236945
    Abstract: Abstract Certain 1H-indazole-3-acetic acid derivatives, and their pharmaceutically-acceptable esters and salts, are inhibitors of the aldose reductase enzyme, and so are useful in the treatment of diabetic complications.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: August 17, 1993
    Assignee: Pfizer Inc.
    Inventors: Banavara L. Mylari, William J. Zembrowski