Patents Represented by Attorney Albert E. Frost
  • Patent number: 4644005
    Abstract: Ketone containing 1-substituted oxindole-3-carboxamides as antiinflammatory agents prepared by reaction of the 1-substituted oxindole with an isocyanate or by aminolysis of the corresponding alkyl oxindole-3-carboxylate.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: February 17, 1987
    Assignee: Pfizer Inc.
    Inventor: Lawrence S. Melvin, Jr.
  • Patent number: 4638007
    Abstract: Antifungal 1-[3-(substituted)-2-hydroxy-2-(perfluoroalkyl)-propyl]triazole derivatives wherein the 3-propyl substituent represents optionally substituted phenoxy, heteroaryloxy, alkylthio, alkylsulfinyl, alkylsulfonyl or optionally substituted carbamoyl.
    Type: Grant
    Filed: August 20, 1984
    Date of Patent: January 20, 1987
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4636500
    Abstract: N-(mono or disubstituted Phenoxyalkyl)imidazoles and the pharmaceutically acceptable acid addition salts thereof are able to selectively inhibit the action of the thromboxane synthetase enzyme without significantly inhibiting the action of the prostacycline synthetase or cyclooxygenase enzymes and are thus useful in the treatment of ischaemic heart disease, stroke, transient ischaemic attack, thrombosis migraine and the vascular complications of diabetes.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: January 13, 1987
    Assignee: Pfizer Inc.
    Inventors: Peter E. Cross, Roger P. Dickinson
  • Patent number: 4636498
    Abstract: An improved antiinflammatory composition and method of treating inflammation which employs a combination of an antiinflammatory agent (e.g. indomethacin or an oxicam) with a histamine-H.sub.2 antagonist selected from the group consisting of 2-guanidino-4-(4-imidazolyl)thiazole, 2-guanidino-4-(2-methyl-4-imidazolyl )thiazole, 2-(N-benzyl-N'-guanidino)-4-(2-methyl-4-imidazolyl)thiazole, 2-(N-pentyl-N'-guanidino)-4-(2-methyl-4-imidazolyl)thiazole and 2-guanidino-4-[2-(hexylamino)-4-imidazolyl]thiazole.
    Type: Grant
    Filed: August 15, 1985
    Date of Patent: January 13, 1987
    Assignee: Pfizer Inc.
    Inventor: John L. LaMattina
  • Patent number: 4632993
    Abstract: 2-Guanidino-4-(2-methyl-4-imidazolyl)thiazole dihydrobromide and a one-pot, high yield process for its preparation from 2-methyl-4(or 5)-acetylimidazole.
    Type: Grant
    Filed: October 11, 1984
    Date of Patent: December 30, 1986
    Assignee: Pfizer Inc.
    Inventor: Berkeley W. Cue, Jr.
  • Patent number: 4632992
    Abstract: Processes and intermediates useful in the preparation of bronchodilator compounds of the formula ##STR1## wherein R is hydrogen, methyl or hydroxymethyl are described. Those compounds wherein R is H or CH.sub.3 have been found to have further utility as intermediates for pirbuterol (wherein R is hydroxymethyl).
    Type: Grant
    Filed: August 16, 1984
    Date of Patent: December 30, 1986
    Assignee: Pfizer Inc.
    Inventors: Berkeley W. Cue, Stephen S. Massett
  • Patent number: 4628033
    Abstract: A Yarrowia lipolytia strain (PC-30827) ATCC 20688 which is utilized as a suitable host for cloning. The strain is a double auxotroph and requires medium supplemented with leucine and uracil for growth.
    Type: Grant
    Filed: October 6, 1983
    Date of Patent: December 9, 1986
    Assignee: Pfizer Inc.
    Inventor: John R. DeZeeuw
  • Patent number: 4625041
    Abstract: A new acidic polycyclic ether antibiotic, CP-63,517, having the formula: ##STR1## and cationic salts thereof produced by submerged aerobic propagation of Streptomyces endus subsp. aureus, ATCC-39574, a new strain of microorganism isolated from a soil sample in Japan, a process for producing this antibiotic and methods for its use to improve feed utilization, promote growth of cattle and swine and to control coccidiosis.
    Type: Grant
    Filed: August 29, 1985
    Date of Patent: November 25, 1986
    Assignee: Pfizer Inc.
    Inventors: Walter D. Celmer, Walter P. Cullen, Hiroshi Maeda, Junsuke Tone
  • Patent number: 4624958
    Abstract: Diamidines of the formula ##STR1## wherein X is a propylene, isobutylene, guanidine, pyrrole, tetrazole, imidazole or substituted imidazole group; and 2-[4-(2-imidazolinyl)phenyl]-6-(2-imidazolinyl)indole, are useful in the treatment of certain protozoal infections in mammals, particularly in cattle.
    Type: Grant
    Filed: August 28, 1985
    Date of Patent: November 25, 1986
    Assignee: Pfizer Inc.
    Inventor: Edward A. Glazer
  • Patent number: 4622233
    Abstract: Methods for preparing purified, decolorized polydextrose having a lower caloric value, higher pH and less color than presently available commercial material, and the use of said improved product in edible foodstuffs and beverages.
    Type: Grant
    Filed: December 6, 1984
    Date of Patent: November 11, 1986
    Assignee: Pfizer Inc.
    Inventor: Anibal Torres
  • Patent number: 4622406
    Abstract: Hypoglycemic 5-furyl and 5-thienyl derivatives of oxazolidine-2,4-dione and the pharmaceutically-acceptable salts thereof; certain 3-acylated derivatives thereof; and intermediates useful in the preparation of said compounds.
    Type: Grant
    Filed: September 17, 1985
    Date of Patent: November 11, 1986
    Assignee: Pfizer Inc.
    Inventor: Rodney C. Schnur
  • Patent number: 4620019
    Abstract: Chiral sorbinil intermediates of the formula ##STR1## wherein R is hydrogen or benzyloxycarbonyl and Y is hydroxy or amino, processes therefor, and processes for the conversion thereof to sorbinil.
    Type: Grant
    Filed: August 23, 1984
    Date of Patent: October 28, 1986
    Assignee: Pfizer Inc.
    Inventors: Berkeley W. Cue, Jr., Bernard S. Moore
  • Patent number: 4619783
    Abstract: Certain substituted-2-penem-3-carboxylic acid compounds, and pharmaceutically-acceptable salts thereof, can be prepared from the appropriate xanthate or trithiocarbonate by desulfurization, followed by halogenation and ring closure. The corresponding desulfurized and halogenated intermediates are disclosed.
    Type: Grant
    Filed: June 10, 1983
    Date of Patent: October 28, 1986
    Assignee: Pfizer Inc.
    Inventor: Ernest S. Hamanaka
  • Patent number: 4619915
    Abstract: Peptide-substituted heterocyclic compounds having the formula below, pharmaceutically acceptable salts thereof and intermediates therefor; processes for their preparation and use as immunostimulant and antiinfective agents. ##STR1## wherein R is a 5- or 6-membered N-containing heterocyclyl moiety which can have an additional hetero atom selected from N, S or O; R.sup.1 is hydrogen or (C.sub.1-4)alkyl; x is 0 or an integer from 1 to 5; and y is 0 or 1; provided that when y is 0, said N-containing heterocyclyl moiety is linked to the ##STR2## group at its N atom.
    Type: Grant
    Filed: October 19, 1984
    Date of Patent: October 28, 1986
    Assignee: Pfizer Inc.
    Inventor: Jeffrey L. Ives
  • Patent number: 4618609
    Abstract: Dihydropyridine derivatives of the formula: ##STR1## and their pharmaceutically acceptable acid addition salts; wherein R is a substituted aryl group;R.sup.1 and R.sup.2 are each independently C.sub.1 -C.sub.3 alkyl;Y is --(CH.sub.2).sub.n -- where n is 2, or --CH.sub.2 CH(CH.sub.3)--; and Het is a 6-membered aromatic heterocyclic group attached to the adjacent oxygen atom by a carbon atom.The compounds have utility as anti-ischaemic and anti-hypertensive agents.
    Type: Grant
    Filed: June 5, 1985
    Date of Patent: October 21, 1986
    Assignee: Pfizer Inc.
    Inventors: David Alker, Simon F. Campbell, Peter E. Cross
  • Patent number: 4618616
    Abstract: 1-substituted-1-haloaryl-1-('-[1H-1,2,4-triazol-1-yl]-cyclopropyl)-2-(1H-1, 2,4-triazol-1-yl)ethane compounds and pharmaceutical compositions thereof are useful in treating fungal infections in mammals and plants.
    Type: Grant
    Filed: May 24, 1985
    Date of Patent: October 21, 1986
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Robert J. Bass, Kelvin Cooper
  • Patent number: 4616024
    Abstract: 1,4-Dihydropyridine derivatives of the formula: ##STR1## wherein R is aryl or heteroaryl: R.sup.1 and R.sup.2 are each independently C.sub.1 -C.sub.4 alkyl or 2-methoxyethyl; Y is --(CH.sub.2).sub.n --, --CH.sub.2 CH(CH.sub.3)-- or --CH.sub.2 C(CH.sub.3).sub.2 --; n is 1 to 3; and X is a 5 or 6 membered nitrogen containing aromatic heterocyclic ring which may optionally be substituted by one or more C.sub.1 -C.sub.4 alkyl, phenyl, benzyl, CN, --N(R.sup.3).sub.2, (CH.sub.2).sub.m CO.sub.2 H, (CH.sub.2).sub.m CO.sub.2 (C.sub.1 -C.sub.4 alkyl) or (CH.sub.2).sub.m CON(R.sup.3).sub.2 group wherein each R.sup.3 is independently H or C.sub.1 -C.sub.4 alkyl and m is 0 or 1; and their pharmaceutically acceptable acid addition salts, and pharmaceutical preparation containing such compounds, have utility as anti-ischaemic and antihypertensive agents.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: October 7, 1986
    Assignee: Pfizer Inc.
    Inventors: Simon F. Campbell, Peter E. Cross, John K. Stubbs
  • Patent number: 4616026
    Abstract: Compounds of the formula ##STR1## a pharmaceutically or agriculturally acceptable acid addition salt thereof wherein R is 5-chloro-2-pyridyl, phenyl or phenyl substituted by from 1 to 3 substituents, each independently selected from F, Cl, Br, I, CF.sub.3, (C.sub.1 -C.sub.4)alkyl and (C.sub.1 -C.sub.4)alkoxy; and R.sup.1 is H, Cl, phenyl, phenyl substituted by from 1 to 3 substituents each independently selected from F, Cl, Br, I and CF.sub.3 or a heterocyclic group linked to the adjacent CF.sub.2 group by a ring carbon atom; method for their use in combatting fungal infections in plants, seeds and animals, including humans, and pharmaceutical and agricultural compositions containing them.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: October 7, 1986
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4616027
    Abstract: Compounds of the general formula ##STR1## or a pharmaceutically or agriculturally acceptable acid addition salt thereof wherein R is 5-chloro-2-pyridyl, phenyl or phenyl substituted by from one to three substituents, each independently selected from F, Cl, Br, I, CF.sub.3, (C.sub.1 -C.sub.4)alkyl and (C.sub.1 -C.sub.4)alkoxy; and n is zero or an integer from 1 to 5; method for their use in combatting fungal infections in plants, seeds and animals, including humans; and pharmaceutical and agricultural compositions containing them.
    Type: Grant
    Filed: July 25, 1983
    Date of Patent: October 7, 1986
    Assignee: Pfizer Inc.
    Inventors: Kenneth Richardson, Peter J. Whittle
  • Patent number: 4614737
    Abstract: Certain 2-dioxacycloalkylthio-2-penem-3-carboxylic acid compounds are useful as antibacterials for treating mammals and have the formula ##STR1## or a pharmaceutically acceptable salt thereof, wherein: R is ##STR2## A is carbonyl, methylene or thiocarbonyl; B is alkylene having 2-5 carbon atoms;alk is alkylene having 1-6 carbon atoms;R.sub.1 is hydrogen or a group which results in an ester which is hydrolyzable in vivo; andn is zero or one.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: September 30, 1986
    Assignee: Pfizer Inc.
    Inventor: Ernest S. Hamanaka