Patent number: 4746656
Abstract: Cardiovascular activity is exhibited by compounds having the formula ##STR1## or a pharmaceutically acceptable salt thereof, wherein R.sub.1 is aryl or heterocyclo;R.sub.2 is hydrogen, alkyl, alkenyl, alkynyl, cycloalkyl, aryl, --(CH.sub.2).sub.n --Y.sub.1, or halo substituted alkyl;R.sub.3 is hydrogen, alkyl, cycloalkyl, aryl, heterocyclo, --(CH.sub.2).sub.n --Y.sub.2, --(CH.sub.2).sub.p --Y.sub.3, or halo substituted alkyl;R.sub.4 is hydrogen, alkyl, alkenyl, alkynyl, --(CH.sub.2).sub.n --Y.sub.2, --(CH.sub.2).sub.p --Y.sub.3, halo substituted alkyl, or ##STR2## Y.sub.1 is cycloalkyl, aryl, heterocyclo, hydroxyl, alkoxy, aryl--(CH.sub.2).sub.m --O--, mercapto, alkylthio, aryl--(CH.sub.2).sub.m --S--, amino, substituted amino, carbamoyl, ##STR3## Y.sub.2 is cycloalkyl, aryl, heterocyclo, carbamoyl, ##STR4## Y.sub.3 is hydroxyl, alkoxy, aryl--(CH.sub.2).sub.m --O--, mercapto, alkylthio, aryl--(CH.sub.2).sub.m --S--, ##STR5## amino, or substituted amino; Y.sub.4 is alkyl, cycloalkyl, aryl, heterocyclo, --(CH.
Type:
Grant
Filed:
July 21, 1986
Date of Patent:
May 24, 1988
Assignee:
E. R. Squibb & Sons, Inc.
Inventor:
Karnail Atwal