Patents Assigned to Pfizer
  • Patent number: 5464849
    Abstract: Compounds of formula I ##STR1## or salts thereof, where R is alkyl, phenyl, phenoxy or substituted phenyl and phenoxy; X is S or O; n is an integer of 1 or 2; A is --CH.sub.2 -- or --CH(CH.sub.3)--; and B is hydrogen or methyl, useful as antiallergy and antiinflammatory agents.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: November 7, 1995
    Assignee: Pfizer Inc.
    Inventors: Takashi Mano, Rodney W. Stevens, Masami Nakane
  • Patent number: 5463126
    Abstract: The invention provides the substantially geometrically pure cis-stereoisomeric form of a compound of formula (I) and the substantially geometrically and optically pure cis-stereoisomeric form of a compound of formula (II): ##STR1## wherein R.sup.1 is H or C.sub.1 -C.sub.4 alkyl, together with processes for their preparation. The compounds are intermediates for the preparation of the antidepressant agent known as sertraline.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: October 31, 1995
    Assignee: Pfizer Inc.
    Inventor: Michael T. Williams
  • Patent number: 5463070
    Abstract: Certain 1-(benzyl or 5-benzofuranylmethyl)-1-hydroxyurea derivatives are useful as hypoglycemic and hypocholesterolemic agents.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: October 31, 1995
    Assignee: Pfizer Inc.
    Inventors: Steven W. Goldstein, Ruth E. McDermott
  • Patent number: 5461056
    Abstract: Racemic or optically active compound of the formula ##STR1## wherein X, Y, R.sup.1 and R.sup.2 are as defined above useful in the treatment of asthma or inflammatory airway or skin diseases.
    Type: Grant
    Filed: May 3, 1994
    Date of Patent: October 24, 1995
    Assignee: Pfizer Inc.
    Inventor: John B. Cheng
  • Patent number: 5459155
    Abstract: This invention is directed to anthelmintic benzimidazole compounds of formula (IA) or (IB) ##STR1## or non-toxic salts thereof, wherein R, which in the compounds (IA) is in the 5- or 6- position, is H, benzoyl, styryl, phenyloxy, phenylthio, phenylsulfinyl, phenylsulfonyl, phenylsulfonyloxy, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, C.sub.1 -C.sub.6 alkylthio, C.sub.1 -C.sub.6 alkylsulfinyl, C.sub.1 -C.sub.6 alkylsulfonyl or (C.sub.3 -C.sub.7 cycloalkyl) carbonyl, said phenyl groups, and the phenyl portion of said benzoyl group, optionally having 1 to 3 substituents each independently selected from halo, C.sub.1 -C.sub.4 alkyl, halo-(C.sub.1 -C.sub.4 alkyl), C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 alkylsulfinyl, C.sub.1 -C.sub.4 alkylsulfonyl, C.sub.2 -C.sub.4 alkanoyl, nitro, isothiocyanato, and cyano; and either (a) R.sup.1 is a 1- (C.sub.2 -C.sub.6 alkanoyloxy) (C.sub.1 -C.sub.4 alkyl) group and R.sup.2 is H, C.sub.1 -C.sub.4 alkyl or a 1-(C.sub.1 -C.sub.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: October 17, 1995
    Assignee: Pfizer Inc.
    Inventors: Bernard J. Banks, Christopher J. Dutton, Alexander C. Goudie
  • Patent number: 5458910
    Abstract: There is disclosed a low calorie fat substitute comprising a sorbitol fatty acid ester with a degree of substitution of about four fatty acid groups. Foodstuffs containing the sorbitol tetraester are also disclosed.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: October 17, 1995
    Assignee: Pfizer Inc.
    Inventors: Gordon D. Gruetzmacher, Jeffrey W. Raggon, Bishop Wlodecki
  • Patent number: 5459145
    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: January 19, 1988
    Date of Patent: October 17, 1995
    Assignee: Pfizer Inc.
    Inventors: Nicholas A. Saccomano, Fredric J. Vinick
  • Patent number: 5457237
    Abstract: Certain dihydroxyindanone compounds, and their pharmaceutically-acceptable salts, are inhibitors of tyrosine kinase enzymes, and so are useful for the control of tyrosine kinase dependent diseases (e.g., cancer, atherosclerosis).
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: October 10, 1995
    Assignee: Pfizer Inc.
    Inventor: Robert L. Dow
  • Patent number: 5457118
    Type: Grant
    Filed: April 20, 1994
    Date of Patent: October 10, 1995
    Assignee: Pfizer Inc.
    Inventors: Roger P. Dickinson, Kevin N. Dack, John Steele
  • Patent number: 5457214
    Abstract: The present invention is directed to a method for the recovery of erythorbates from photographic solutions. In the disclosed method, the photographic solution is first acidified by passing it over an acidic cation exchange resin and the resultant solution is then passed over a weakly basic anion exchange resin.
    Type: Grant
    Filed: October 19, 1994
    Date of Patent: October 10, 1995
    Assignee: Pfizer Inc.
    Inventor: Alvin J. O'Donnell
  • Patent number: 5455250
    Type: Grant
    Filed: September 16, 1993
    Date of Patent: October 3, 1995
    Assignee: Pfizer Inc.
    Inventor: Bertrand L. Chenard
  • Patent number: 5455350
    Abstract: (C.sub.1 -C.sub.3)Alkyl-4,6,7,8,9,9a-hexahydro-2H,3H-pyrido[1,2-a]pyrazin-1-one-7-c arboxylate esters, important precursors to certain bis-aza-bicyclic anxiolytics, can be prepared from di(C.sub.1 -C.sub.3)alkyl cis-piperidine-2,5-dicarboxylate starting material by a new process via a new class of intermediates, di(C.sub.1 -C.sub.3)alkyl cis-N-(2-(phthalimido)ethyl)piperidine-2,5-dicarboxylates. In the process, the starting material is reacted with either 2-(phthalimido)ethyl triflate or 2-(phthalimido)acetaldehyde to form the new intermediate, which can then be cyclized to the aforementioned precursor.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: October 3, 1995
    Assignee: Pfizer Inc.
    Inventors: Dennis M. Godek, Charles W. Murtiashaw, Frank J. Urban, Brian C. Vanderplas
  • Patent number: 5451586
    Abstract: Compounds of the formula ##STR1## wherein R.sup.1 is hydrogen or (C.sub.1 -C.sub.6)alkyl; R.sup.2 is phenyl, pyridyl, thienyl or furyl, and R.sup.2 may optionally be substituted with from one to three substituents independently selected from (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkoxy, chloro, fluoro, bromo, iodo, and trifluoromethyl; R.sup.3 is phenyl, naphthyl, pyridyl, thienyl or furyl, and R.sup.3 may optionally be substituted with from one to three substituents independently selected from (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkoxy, chloro, fluoro, bromo, iodo and trifluoromethyl; and the pharmaceutically acceptable salts of such compounds.These compounds are substance P antagonists and useful in the treatment of gastrointestinal disorders, inflammatory disorders, central nervous system disorders and pain.
    Type: Grant
    Filed: December 13, 1993
    Date of Patent: September 19, 1995
    Assignee: Pfizer Inc.
    Inventor: John A. Lowe, III
  • Patent number: 5451511
    Abstract: The invention provides novel compounds having the formula: ##STR1## wherein R when taken individually is H; R.sup.1 when taken individually is H or OH; R and R.sup.1 when taken together represent a double bond;R.sup.2 is an alpha-branched C.sub.3 -C.sub.8 alkyl, alkenyl, alkynyl, alkoxyalkyl or alkylthioalkyl group; a C.sub.3 -C.sub.8 cycloalkyl, C.sub.5 -C.sub.8 cycloalkenyl or C.sub.5 -C.sub.8 cycloalkylalkyl group, any of which may be substituted by methylene or one or more C.sub.1 -C.sub.4 alkyl groups or halo atoms; or a 3 to 6 membered oxygen or sulphur containing heterocyclic ring which may be substituted by one or more C.sub.1 -C.sub.4 alkyl groups or halo atoms;R.sup.3 is hydrogen or methyl;R.sup.4 is H or 4'-(alpha-L-oleandrosyl)-alpha-L-oleandrosyloxy with the proviso that when R.sup.2 is alkyl it is not isopropyl or sec-butyl; when R.sup.4 is H, each of R and R.sup.1 is H, and R.sup.2 is not methyl or ethyl; and when R.sup.4 is H, R is H, R.sup.1 is OH, and R.sup.
    Type: Grant
    Filed: March 9, 1993
    Date of Patent: September 19, 1995
    Assignee: Pfizer Inc.
    Inventors: Stephen P. Gibson, Alexander C. Goudie, Kelvin S. Holdom, John D. Bu'Lock
  • Patent number: 5446050
    Abstract: Novel azabicyclo amides and esters as antagonists at the 5-HT.sub.3 receptor and useful as anti-emetic agents.
    Type: Grant
    Filed: May 27, 1992
    Date of Patent: August 29, 1995
    Assignee: Pfizer Inc.
    Inventor: Terry J. Rosen
  • Patent number: 5444062
    Abstract: 2,4-Diaminoquinazoline derivatives as potentiators of chemotherapeutic agents in the treatment of cancer.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: August 22, 1995
    Assignee: Pfizer Inc.
    Inventors: Jotham W. Coe, Anton F. J. Fliri, Takushi Kaneko, Eric R. Larson
  • Patent number: 5443843
    Abstract: An oral drug delivery system having delayed gastrointestinal transit comprising a non-continuous compressible element and an attached controlled release device and which in the expanded form resists gastrointestinal transit; and a modular system for use therein comprising a non-continuous compressible element and an attached receptacle means for receiving and holding a drug-containing orally administrable controlled release device and which in the expanded form resists gastric transit.
    Type: Grant
    Filed: December 24, 1990
    Date of Patent: August 22, 1995
    Assignee: Pfizer Inc.
    Inventors: William J. Curatolo, Jeelin Lo
  • Patent number: 5442068
    Abstract: Azabicyclo [2.2.2.]octan-3-imines of the general formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are as defined herein are prepared by reacting a compound of the formula ##STR2## with a compound of the formula ##STR3## wherein A is MgCl, MgBr or Li.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: August 15, 1995
    Assignee: Pfizer Inc.
    Inventors: Dennis M. Godek, Charles W. Murtiashaw
  • Patent number: 5442044
    Abstract: This invention relates to compounds of the formula ##STR1## wherein Q, Z, D, E, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are defined as below, and the pharmaceutically acceptable salts thereof are disclosed. The compounds are useful as antihypertensive agents.
    Type: Grant
    Filed: March 8, 1993
    Date of Patent: August 15, 1995
    Assignee: Pfizer Inc.
    Inventors: Dennis J. Hoover, Bruce A. Lefker, Robert L. Rosati
  • Patent number: D363430
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: October 24, 1995
    Assignee: Pfizer Inc.
    Inventors: Stanley A. Danowski, Robert E. Dawson, Douglas W. Smith