Patents by Inventor David G. Wettlaufer

David G. Wettlaufer 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: 5114936
    Abstract: This invention relates to 6,7-dihydro-3-phenyl-1,2-benzisoxazol-4(5H)-ones and -ols of the formula ##STR1## wherein X is (Y) ##STR2## or loweralkyl; Y is hydrogen, halogen, loweralkyl, loweralkoxy, trifluoromethyl, nitro or amino; R is H when the bond between the oxygen atom and the carbon atom in question is a single bond; otherwise the dotted line signifies part of a double bond to the oxygen atom; R.sub.1 is hydrogen, loweralkyl or arylloweralkyl; R.sub.2 and R.sub.3 are independently hydrogen, lower alkyl or arylloweralkyl, or R.sub.2 and R.sub.3 taken together with the nitogen atom form an optionally substituted heterocycle selected from the group consisting of piperidinyl, pyrrolidinyl, morpholinyl, imidazol-1-yl, 1-piperazinyl, said substituents being hydrogen or loweralkyl; 4-substituted-1-piperazinyl of the formula ##STR3## where R.sub.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: May 19, 1992
    Assignee: Hoechst-Roussel Pharmaceuticals Incorporated
    Inventors: David G. Wettlaufer, Gregory M. Shutske, Peter A. Nemoto
  • Patent number: 5102891
    Abstract: There are disclosed various compounds of the formula below, ##STR1## where n is 0 or 1;X is hydrogen, halogen, nitro, amino, trifluoromethyl, loweralkyl, or loweralkoxy;Y is hydrogen, halogen, nitro, amino, trifluoromethyl, loweralkyl, or loweralkoxy;R.sub.1 is hydrogen, loweralkyl, arylloweralkyl, loweralkenyl, loweralkynyl, loweralkanoyl, arylloweralkanoyl, heteroarylloweralkyl or heteroarylloweralkanoyl;R.sub.2 is hydrogen, loweralkyl, formyl or cyano;R.sub.3 is hydrogen or loweralkyl;R.sub.4 is loweralkyl, arylloweralkyl, cycloalkyl, aryl or heteroaryl; or alternatively, --NR.sub.3 R.sub.4 taken together constitutes ##STR2## R.sub.5 being hydrogen, loweralkyl, aryl, arylloweralkyl, heteroaryl or heteroarylloweralkyl,which compounds are useful for the treatment of various memory dysfunctions characterized by a cholinergic deficit such as Alzheimer's disease.
    Type: Grant
    Filed: July 23, 1990
    Date of Patent: April 7, 1992
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventors: Richard C. Effland, Larry Davis, Gordon E. Olsen, Joseph T. Klein, David G. Wettlaufer, Peter A. Nemoto
  • Patent number: 5053511
    Abstract: This invention relates to 1,3-dihydro-1-(pyridinylamino)-2H-indol-2-ones of the formula ##STR1## where R.sub.1, R.sub.2 and R.sub.3 are independently hydrogen, loweralkyl, aryl, arylloweralkyl or heteroarylloweralkyl selected from the group consisting of pyridinylmethyl, pyridinylethyl, thienylmethyl, thienylethyl; or R.sub.2 and R.sub.3 together form a cycloalkane ring of 4 to 6 carbons or a spiro-fused aryl cycloalkane or heterocycloalkyl selected from the group consisting of piperidine and tetrahydropyran; X and Y are independently hydrogen, halogen, hydroxy, loweralkyl, loweralkoxy, nitro, amino or trifluoromethyl; m and n are independently integers of 1 to 3, the pharmaceutically acceptable acid addition salts thereof and, where applicable the optical, geometrical and stereoisomers and racemic mixtures thereof. The compounds of this invention display utility as analgesics, anticonvulsants, for enhancing memory and for the treatment of Alzheimer's disease.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: October 1, 1991
    Assignee: Hoechst-Roussel Pharmaceuticals Incorporated
    Inventors: Richard C. Effland, David G. Wettlaufer
  • Patent number: 5037985
    Abstract: Novel 2,6-methanopyrrolo-3-benzazocines, intermediates, processes for the preparation thereof, and methods for alleviating pain utilizing compounds or compositions thereof are disclosed.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: August 6, 1991
    Assignee: Hoechst-Roussel Pharmaceuticals Incorporated
    Inventors: Richard C. Allen, David G. Wettlaufer
  • Patent number: 5006536
    Abstract: Novel thienobenzoxepins and naphthothiophenes, intermediates and processes for the preparation thereof, and methods of alleviating pain utilizing compounds or compositions thereof are disclosed.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: April 9, 1991
    Assignee: Hoechst-Roussel Pharmaceuticals Inc.
    Inventors: Richard C. Effland, David G. Wettlaufer
  • Patent number: 5006537
    Abstract: This invention relates to 1,3-dihydro-1-(pyridinylamino)-2H-indol-2-ones of the formula ##STR1## where R.sub.1,R.sub.2 and R.sub.3 are independently hydrogen, loweralkyl, aryl, arylloweralkyl or heteroarylloweralkyl selected from the group consisting of pyridinylmethyl, pyridinylethyl, thienylmethyl, thienylethyl; or R.sub.2 and R.sub.3 together form a cycloalkane ring of 4 to 6 carbons or a spiro-fused aryl or heteroaryl cycloalkane; X and Y are independently hydrogen, halogen, hydroxy, loweralkyl, loweralkoxy, nitro, amino or trifluoromethyl; m and n are independently integers of 1 to 3, the pharmaceutically acceptable acid addition salts thereof and, where applicable the optical, geometrical and stereoisomers and racemic mixtures thereof. The compounds of this invention display utility as analgesics, anticonvulsants, for enhancing memory and for the treatment of Alzheimer's disease.
    Type: Grant
    Filed: August 2, 1989
    Date of Patent: April 9, 1991
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventors: Richard C. Effland, David G. Wettlaufer
  • Patent number: 4994472
    Abstract: This invention relates to 1-(pyridinylamino)-2-pyrrolidinones of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are independently hydrogen, loweralkyl, aryl, arylloweralkyl or heteroarylloweralkyl selected from the group consisting of pyridinylmethyl, pyridinylethyl, thienylmethyl, thienylethyl or R.sub.2 and R.sub.3 together form a cycloalkane ring of 4 to 6 carbons or a spiro-fused aryl or heteroaryl substituted cycloalkane; X is hydrogen, halogen, hydroxy, loweralkyl, loweralkoxy, nitro, amino or trifluoromethyl; m is an integer of 1 to 3, the pharmaceutically acceptable acid addition salts thereof and where appropriate the geometrical, optical and stereoisomers and racemic mixtures thereof. The compounds of this invention display utility as analgesics, for enhancing memory and for the treatment of Alzheimer's disease.
    Type: Grant
    Filed: August 2, 1989
    Date of Patent: February 19, 1991
    Assignee: Hoechst-Roussel Pharmaceuticals Incorporated
    Inventors: Richard C. Effland, David G. Wettlaufer
  • Patent number: 4929622
    Abstract: Novel 2,6-methanopyrrolo-3-benzazocines, intermediates, processes for the preparation thereof, and methods for alleviating pain utilizing compounds or compositions thereof are disclosed.
    Type: Grant
    Filed: November 16, 1988
    Date of Patent: May 29, 1990
    Assignee: Hoechst-Roussel Pharmaceuticals, Inc.
    Inventors: Richard C. Allen, David G. Wettlaufer