Patents by Inventor Frederick J. Ehrgott

Frederick J. Ehrgott 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: 6174883
    Abstract: This invention relates to novel 3-substituted-2-oxindole derivatives of the formula and the phamaceutically-accepted salts thereof which are inhibitors of prostaglandin H2 synthase, 5-lipoxygenase and interleukin-1 biosynthesis. The compounds of the invention are useful as inhibitors of prostaglandin H2 synthase and interleukin-1 biosynthesis, per se, and as analgesic, antiinflammatory and antiarthritic agents in the treatment of chronic inflammatory diseases. This invention also relates to pharmaceutical compositions comprising said 3-substituted-2-oxindole derivatives; to methods of inhibiting prostaglandin H2 synthase and biosynthesis of interleukin-1; and to treating chronic inflammatory diseases in a mammal with said compounds. Further, this invention relates to certain novel carboxylic acids useful as intermediates in the preparation of the 3-substituted-2-oxindole derivatives of this invention and to a process for the preparation of the 3-substituted-2-oxindole derivatives.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 16, 2001
    Assignee: Pfizer Inc.
    Inventors: Frederick J. Ehrgott, Carl J. Goddard, Gary R. Schulte
  • Patent number: 5919809
    Abstract: This invention relates to novel 3-substituted-2-oxindole derivatives of the formula ##STR1## and the pharmaceutically-acceptable salts thereof which are inhibitors of prostaglandin H.sub.2 synthase, 5-lipoxygenase and interleukin-1 biosynthesis. The compounds of the invention are useful as inhibitors of prostaglandin H.sub.2 synthase and interleukin-1 biosynthesis, per se, and as analgesic, antiinflammatory and antiarthritic agents in the treatment of chronic inflammatory diseases. This invention also relates to pharmaceutical compositions comprising said 3-substituted-2-oxindole derivatives; to methods of inhibiting prostaglandin H.sub.2 synthase and biosynthesis of interleukin-1; and to treating chronic inflammatory diseases in a mammal with said compounds. Further, this invention relates to certain novel carboxylic acids useful as intermediates in the preparation of the 3-substituted-2-oxindole derivatives of this invention and to a process for the preparation of the 3-substituted-2-oxindole derivatives.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: July 6, 1999
    Assignee: Pfizer Inc.
    Inventors: Frederick J. Ehrgott, Carl J. Goddard, Gary R. Schulte
  • Patent number: 5300655
    Abstract: This invention relates to novel 3-substituted-2-oxindole derivatives which are inhibitors of prostaglandin H.sub.2 synthase, 5-lipoxygenase and interleukin-1 biosynthesis. The compounds of the invention are useful as inhibitors of prostaglandin H.sub.2 synthase and interleukin-1 biosynthesis, per se, and as analgesic, antiinflammatory and antiarthritic agents in the treatment of chronic inflammatory diseases. This invention also relates to pharmaceutical compositions comprising said 3-substituted-2-oxindole derivatives; to methods of inhibiting prostaglandin H.sub.2 synthase and biosynthesis of interleukin-1; and to treating chronic inflammatory diseases in a mammal with said compounds. Further, this invention relates to certain novel carboxylic acids useful as intermediates in the preparation of the 3-substituted-2-oxindole derivatives of this invention and to a process for the preparation of the 3-substituted-2-oxindole derivatives.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: April 5, 1994
    Assignee: Pfizer Inc.
    Inventors: Frederick J. Ehrgott, Carl J. Goddard, Gary R. Schulte
  • Patent number: 5290802
    Abstract: This invention relates to novel 3-substituted-2-oxindole derivatives which are inhibitors of prostaglandin H.sub.2 synthase, 5-lipoxygenase and interleukin-1 biosynthesis. The compounds of the invention are useful as inhibitors of prostaglandin H.sub.2 synthase and interleukin-1 biosynthesis, per se, and as analgesic, antiinflammatory and antiarthritic agents in the treatment of chronic inflammatory diseases This invention also relates to pharmaceutical compositions comprising said 3-substituted-2-oxindole derivatives; to methods of inhibiting prostaglandin H.sub.2 synthase and biosynthesis of interleukin-1; and to treating chronic inflammatory diseases in a mammal with said compounds. Further, this invention relates to certain novel carboxylic acids useful as intermediates in the preparation of the 3-substituted-2-oxindole derivatives of this invention and to a process for the preparation of the 3-substituted-2-oxindole derivatives.
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: March 1, 1994
    Assignee: Pfizer Inc.
    Inventors: Frederick J. Ehrgott, Carl J. Goddard, Gary R. Schulte
  • Patent number: 5059693
    Abstract: Process for making antiinflammatory 3-aroyl-2-oxindole-1-carboxamides by reductive debromination or deiodination of 3-(bromo- or iodoaroyl)-2-oxindole-1-carboxamides.
    Type: Grant
    Filed: October 6, 1989
    Date of Patent: October 22, 1991
    Assignee: Pfizer Inc.
    Inventors: Gary R. Schulte, Frederick J. Ehrgott
  • Patent number: 5047554
    Abstract: This invention relates to novel 3-substituted-2-oxindole derivatives which are inhibitors of prostaglandin H.sub.2 synthase, 5-lipoxygenase and interleukin-1 biosynthesis. The compounds of the invention are useful as inhibitors of prostaglandin H.sub.2 synthase and interleukin-1 biosynthesis, per se, and as analgesic, antiinflammatory and antiarthritic agents in the treatment of chronic inflammatory diseases. This invention also relates to pharmaceutical compositions comprising said 3-substituted-2-oxindole derivatives; to methods of inhibiting prostaglandin H.sub.2 synthase and biosynthesis of interleukin-1; and to treating chronic inflammatory diseases in a mammal with said compounds. Further, this invention relates to certain novel carboxylic acids useful as intermediates in the preparation of the 3-substituted-2-oxindole derivatives of this invention and to a process for the preparation of the 3-substituted-2-oxindole derivatives.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: September 10, 1991
    Assignee: Pfizer Inc.
    Inventors: Frederick J. Ehrgott, Carl J. Goddard, Gary R. Schulte
  • Patent number: 4424357
    Abstract: Novel 4-aryloxy- and 4-arylthio-3-phenylpiperidines and related compounds, physiologically acceptable salts thereof and intermediates therefor possessing analgesic, antidepressant properties, and a process for the preparation of such compounds, derivatives and intermediates are described.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: January 3, 1984
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventors: Solomon S. Klioze, Frederick J. Ehrgott
  • Patent number: 4382141
    Abstract: Novel 4-aryloxy- and 4-arylthio-3-phenylpiperidines and related compounds, physiologically acceptable salts thereof and intermediates therefor possessing analgesic, antidepressant properties, and a process for the preparation of such compounds, derivatives and intermediates are described.
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: May 3, 1983
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventors: Solomon S. Klioze, Frederick J. Ehrgott
  • Patent number: 4312876
    Abstract: Novel 4-aryloxy- and 4-arylthio-3-phenylpiperidines and related compounds, physiologically acceptable salts thereof and intermediates therefor possessing analgesic, antidepressant properties, and a process for the preparation of such compounds, derivatives and intermediates are described.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: January 26, 1982
    Assignee: Hoechst-Roussel Pharmaceuticals Incorporated
    Inventors: Solomon S. Klioze, Frederick J. Ehrgott
  • Patent number: 4302590
    Abstract: Novel 4-aryloxy- and 4-arylthio-3-phenylpiperidines and related compounds, physiologically acceptable salts thereof and intermediates therefor possessing analgesic, antidepressant properties, and a process for the preparation of such compounds, derivatives and intermediates are described.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: November 24, 1981
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventors: Solomon S. Klioze, Frederick J. Ehrgott
  • Patent number: 4216218
    Abstract: Novel 4-aryloxy- and 4-arylthio-3-phenylpiperidines and related compounds, physiologically acceptable salts thereof and intermediates therefor possessing analgesic, antidepressant properties, and a process for the preparation of such compounds, derivatives and intermediates are described.
    Type: Grant
    Filed: February 23, 1979
    Date of Patent: August 5, 1980
    Assignee: American Hoechst Corporation
    Inventors: Solomon S. Klioze, Frederick J. Ehrgott