Patents by Inventor Madelene Nikaido

Madelene Nikaido 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: 5498776
    Abstract: This invention relates to pyrrolo-, pyrido-, azepino-, and azocinopyrimidines of the general formula I ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently H, lower alkyl containing 1 to 6 carbon atoms, or perfluoroalkyl containing 1 to 6 carbon atoms; R.sup.5 is H or, when n is 1, R.sup.5 taken together with R.sup.3 comprises a double bond, n is 0 or 1, p is 0 to 2, m is 0 to 3; Ar.sup.1 is ##STR2## wherein W is H, lower alkyl containing 1 to 6 carbon atoms, halogen, hydroxy, or lower alkoxy containing 1 to 6 carbon atoms; and Ar.sup.2 is ##STR3## wherein X is ##STR4## wherein R.sup.6 is H, tert-butyl, tri-n-butylstannyl, or triphenylmethyl; and the pharmaceutically acceptable salts thereof, which compounds are useful in the treatment of hypertension and congestive heart failure.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: March 12, 1996
    Assignee: American Home Products Corporation
    Inventors: John W. Ellingboe, Madelene Nikaido, Jehan Bagli
  • Patent number: 5336677
    Abstract: This invention relates to substituted 4-aminopyrimidines, which by virtue of their ability to antagonize angiotensin II are useful for the treatment of hypertension, congestive heart failure, and restenosis. The compounds are also useful for reducing lipid levels in the blood plasma and are thus useful for treating hyperlipidemia and hypercholesterolemia. Also disclosed are processes for the production of said compounds and pharmaceutical compositions containing said compounds.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: August 9, 1994
    Assignee: American Home Products Corporation
    Inventors: Dimitri Sarantakis, James J. Bicksler, John W. Ellingboe, Madelene Nikaido
  • Patent number: 5256654
    Abstract: This invention relates to pyrrolo-, pyrido-, azepino-, and azocinopyrimidines of the general formula I ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently H, lower alkyl containing 1 to 6 carbon atoms, or perfluoroalkyl containing 1 to 6 carbon atoms; R.sup.5 is H or when n is 1 R.sup.5 taken together with R.sup.3 comprises a double bond; n is 0 to 1; p is 0 to 2; m is 0 to 3; Ar.sup.1 is ##STR2## wherein W is H, lower alkyl containing 1 to 6 carbon atoms, halogen, hydroxy, or lower alkoxy containing 1 to 6 carbon atoms; Ar.sup.2 is ##STR3## wherein X is ##STR4## wherein R.sup.6 is H, tert-butyl, tri-n-butylstannyl, or triphenylmethyl; and the pharmaceutically acceptable salts thereof which by virtue of their ability to antagonize angiotensin II are useful for the treatment of hypertension, congestive heart failure, and restenosis. The compounds are also useful for reducing lipid levels in the blood plasma and are thus useful for treating hyperlipidemia and hypercholesterolemia.
    Type: Grant
    Filed: June 25, 1992
    Date of Patent: October 26, 1993
    Assignee: American Home Products Corporation
    Inventors: John W. Ellingboe, Madelene Nikaido, Jehan Bagli
  • Patent number: 5149699
    Abstract: This invention relates to pyrrolo-, pyrido-, azepino-, and azocinopyrimidines of the general formula I ##STR1## useful for treating hypertension and congestive heart failure, to pharmaceutical compositions, and to methods for production thereof.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: September 22, 1992
    Assignee: American Home Products Corporation
    Inventors: John W. Ellingboe, Madelene Nikaido, Jehan Bagli