Patents by Inventor Harry R. Howard

Harry R. Howard has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5854239
    Abstract: The present invention relates to diazabicyclic compounds and, specifically, to compounds of the formula ##STR1## wherein A, G, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, and R.sup.7 are as defined in the specification. The compounds of formula I are useful in the treatment of inflammatory and central nervous system disorders, as well as other disorders.
    Type: Grant
    Filed: June 20, 1996
    Date of Patent: December 29, 1998
    Assignee: Pfizer Inc.
    Inventors: Harry R. Howard, Kevin D. Shenk
  • Patent number: 5854262
    Abstract: A compound of the formula ##STR1## or a pharmaceutically acceptable salt thereof; W is hydrogen, (C.sub.1 -C.sub.6)alkyl optionally substituted with from one to three fluorine atoms, --S(O).sub.v --(C.sub.1 -C.sub.6) alkyl wherein v is zero, one or two, halo, benzyloxy or (C.sub.1 -C.sub.6)alkoxy optionally substituted with from one to three fluorine atoms;R.sup.1 is a 4, 5 or 6 membered heterocyclic ring containing from one to three heteroatoms selected from oxygen, nitrogen and sulfur, wherein said heterocyclic ring contains from zero to three double bonds and is optionally substituted with one or two substituents independently selected from (C.sub.1 -C.sub.6) alkyl optionally substituted with from one to three fluorine atoms and (C.sub.1 -C.sub.6) alkoxy optionally substituted with from one to three fluorine atoms;R.sup.2 is hydrogen or --CO.sub.2 (C.sub.1 -C.sub.10)alkyl;R.sup.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: December 29, 1998
    Assignee: Pfizer Inc.
    Inventors: Harry R. Howard, Brian T. O'Neill
  • Patent number: 5821245
    Abstract: A method of inhibiting cell growth in human small cell lung carcinoma comprising administering to a mammal in need of such treatment a cell growth inhibitory amount of a compound of the formula ##STR1##
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: October 13, 1998
    Assignee: Pfizer Inc.
    Inventor: Harry R. Howard, Jr.
  • Patent number: 5721255
    Abstract: The present invention relates to novel substituted benzylamino nitrogen containing non-aromatic heterocycles and, specifically, to compounds of the formula ##STR1## wherein W, R.sup.1, R.sup.2, R.sup.3 and A are as defined in the specification, and to intermediates used in the synthesis of such compounds. The novel compounds of formula I are useful in the treatment of inflammatory and central nervous system disorders, as well as other disorders.
    Type: Grant
    Filed: February 15, 1995
    Date of Patent: February 24, 1998
    Assignee: Pfizer Inc.
    Inventors: Harry R. Howard, Masami Nakane, Masaya Ikunaka, Kunio Satake, Terry J. Rosen, John A. Lowe, III, Brian T. O'Neill, Fumitaka Ito
  • Patent number: 5703065
    Abstract: The invention relates to compounds of the formula ##STR1## and to pharmaceutically acceptable salts thereof, wherein A, W, P, R.sup.3, Q and R.sup.1 are as defined herein. The compounds of formula I, and pharmaceutically acceptable salts thereof, are substance P antagonists and as such are useful in the treament of various inflammatory and central nervous system disorders.
    Type: Grant
    Filed: May 7, 1996
    Date of Patent: December 30, 1997
    Assignee: Pfizer Inc.
    Inventor: Harry R. Howard, Jr.
  • Patent number: 5597826
    Abstract: The present invention relates to novel compositions containing the serotonin selective re-uptake inhibitor (SSRI), preferably (1S-cis)-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-N-methyl-1-naphthalenam ine, and an agonist or antagonist of the serotonin 1 (5-HT.sub.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: January 28, 1997
    Assignee: Pfizer Inc.
    Inventors: Harry R. Howard, John E. Macor, Bertrand L. Chenard, Jeffrey S. Sprouse, David W. Schulz
  • 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: 5350747
    Abstract: Compounds of the formula ##STR1## and pharmaceutical compositions comprising them, wherein R.sup.1, Z, X, W and Y are as defined below. The compounds are useful in the treatment of psychosis and anxiety.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: September 27, 1994
    Assignee: Pfizer Inc
    Inventor: Harry R. Howard
  • Patent number: 5276040
    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: June 22, 1992
    Date of Patent: January 4, 1994
    Assignee: Pfizer Inc.
    Inventor: Harry R. Howard, Jr.
  • Patent number: 5147881
    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: November 14, 1990
    Date of Patent: September 15, 1992
    Assignee: Pfizer Inc
    Inventor: Harry R. Howard, Jr.
  • Patent number: 5064852
    Abstract: A series of novel 3-mono(substituted methyl)- and 3,3-di(substituted methyl)-2-oxo-indoline-1-alkanoic acid compounds have been prepared, including their lower alkyl esters and unsubstituted amide derivatives, as well as the base salts of said acids with pharmacologically acceptable cations. These compounds are useful in therapy as aldose reductase inhibitors for the control of certain chronic diabetic complications. Typical members include those compounds derived from 2-oxo-indoline-1-acetic acid wherein a 3,4-dichlorobenzyl or 3,4-dichloro-.alpha.-methylbenzyl moiety is substituted at 3-position of the molecule. Preferred member compounds include 3-(3,4-dichlorobenzyl)-2-oxo-indoline-1-acetic acid, 5-chloro-3-(3,4-dichlorobenzyl)-2-oxo-indoline-1-acetic acid, 3-(3,4-dichlorobenzyl)-6-methoxy-2-oxo-indoline-1-acetic acid, 3-(3,4-dichlorobenzyl)-6-hydroxy-2-oxo-indoline-1-acetic acid and 3-(3,4-dichloro-.alpha.-methylbenzyl)-2-oxo-indoline-1-acetic acid.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: November 12, 1991
    Assignee: Pfizer Inc.
    Inventors: Harry R. Howard, Jr., Reinhard Sarges
  • Patent number: 5006657
    Abstract: A novel three-step process for resolving a racemic spiro-hydantoin compound into its optical antipodes is disclosed, which involves (1) reacting said racemic compound with an optically-active asymmetric isocyanate of the formula RNCO, wherein R is (S)- or (R)-1-phenylethyl or (S)-or (R)-1-(1-naphthyl)ethyl, to form the corresponding diastereomeric ureido compound; (2) separating the resulting diastereomeric mixture into its component parts, and (3) thereafter converting the separated ureido diasteromers obtained in step (b) to the corresponding asymmetric hydantoin compounds by treatment with an alkali metal lower alkoxide (C.sub.1 -C.sub.4), followed by acidification, whereupon the desired optical isomer is obtained.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: April 9, 1991
    Assignee: Pfizer Inc.
    Inventors: Marcus Brackeen, Harry R. Howard, Jr.
  • Patent number: 4977178
    Abstract: Certain substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones are highly potent gabaergic agents, valuable in the treatment of individuals suffering from schizophrenia or reversing the side effects of a previously or concurrently administered neuroleptic agent; or in the treatment of epilepsy. A wider class of substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones, together with 1-phenyl-3-(2-pyrrolidinylidene)-2(1H,3H)-indolones, and homologs thereof, are valuable in the treatment of anxiety.
    Type: Grant
    Filed: July 19, 1989
    Date of Patent: December 11, 1990
    Assignee: Pfizer Inc.
    Inventors: Harry R. Howard, Jr., Reinhard Sarges
  • Patent number: 4960785
    Abstract: A series of novel 3-mono(substituted methyl)- and 3,3-di(substituted methyl)-2-oxo-indoline-1-alkanoic acid compounds have been prepared, including their lower alkyl esters and unsubstituted amide derivatives, as well as the base salts of said acids with pharmacologically acceptable cations. These compounds are useful in therapy as aldose reductase inhibitors for the control of certain chronic diabetic complications. Said oxindole-1-alkanoic acid compounds are of the formulae: ##STR1## wherein X is hydrogen and X.sup.1 is hydrogen, hydroxy, fluorine, chlorine, bromine, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy; or X and X.sup.1, when taken separately, are each chlorine, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, and when taken together are --OCH.sub.2 (CH.sub.2).sub.n O-- at the 4,5-, 5,6- or 6,7-positions of the molecule wherein n is zero or one; R.sub.1 is hydrogen or methyl; R.sub.2 is hydrogen, C.sub.1 -C.sub.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: October 2, 1990
    Assignee: Pfizer Inc.
    Inventors: Harry R. Howard, Jr., Reinhard Sarges
  • Patent number: 4952694
    Abstract: A novel three-step process for resolving a racemic spiro-hydantoin compound into its optical antipodes is disclosed, which involves (1) reacting said racemic compound with an optically-active asymmetric isocyanate of the formula RNCO, wherein R is (S)- or (R)-1-phenylethyl or (S) or (R)-1-(1-naphthyl)ethyl, to form the corresponding diastereomeric uredio compound; (2) separating the resulting diastereomeric mixture into its component parts, and (3) thereafter converting the separated ureido diastereomers obtained in step (b) to the corresponding asymmetric hydantoin compounds by treatment with an alkali metal lower alkoxide (C.sub.1 -C.sub.4), followed by acidification, whereupon the desired optical isomer is obtained.
    Type: Grant
    Filed: July 27, 1988
    Date of Patent: August 28, 1990
    Assignee: Pfizer Inc.
    Inventors: Marcus Brackeen, Harry R. Howard, Jr.
  • Patent number: 4879391
    Abstract: Certain substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones are highly potent gabaergic agents, valuable in the treatment of individuals suffering from schizophrenia or reversing the side effects of a previously or concurrently administered neuroleptic agent; or in the treatment of epilepsy. A wider class of substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones, together with 1-phenyl-3-(2-pyrrolidinylidiene-2(1H,3H)-indolones, and homologs thereof, are valuable in the treatment of anxiety.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: November 7, 1989
    Assignee: Pfizer Inc.
    Inventors: Harry R. Howard, Jr., Reinhard Sarges
  • Patent number: 4861880
    Abstract: Certain substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones are highly potent gabaergic agents, valuable in the treatment of individuals suffering from schizophrenia or reversing the side effects of a previously or concurrently administered neuroleptic agent; or in the treatment of epilepsy. A wider class of substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones, together with 1-phenyl-3-(2-pyrrolidinylidene)-2(1H,3H)-indolones, and homologs thereof, are valuable in the treatment of anxiety.
    Type: Grant
    Filed: August 15, 1984
    Date of Patent: August 29, 1989
    Assignee: Pfizer Inc.
    Inventors: Harry R. Howard, Jr., Reinhard Sarges
  • Patent number: 4476307
    Abstract: Certain substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones are highly potent gabaergic agents, valuable in the treatment of individuals suffering from schizophrenia or reversing the side effects of a previously or concurrently administered neuroleptic agent; or in the treatment of epilepsy. A wider class of substituted 1-phenyl-3-(aminoalkylidene)-2(1H,3H)-indolones, together with 1-phenyl-3-(2-pyrrolidinylidene)-2(1H,3H)-indolones, and homologs thereof, are valuable in the treatment of anxiety.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: October 9, 1984
    Assignee: Pfizer Inc.
    Inventors: Harry R. Howard, Jr., Reinhard Sarges