N-aroylamino acid amides as endothelin inhibitors

Abstract

The present invention relates to the compounds of formula (I) ##STR1## wherein R is carboxy, esterified carboxy, carbamoyl, N-(alkyl or aryl)-carbamoyl, cyano, 5-tetrazolyl or CONH--SO.sub.2 --R.sub.4 ; R.sub.1 is hydrogen, lower alkyl, aryl-lower alkyl or cycloalkyl-lower alkyl; R.sub.2 is hydrogen or lower alkyl, or R.sub.1 and R.sub.2 represent lower alkylene to form together with the carbon and nitrogen atoms to which they are attached an azacycloalkane ring; R.sub.3 is heterocyclic or carbocyclic (aryl or biaryl)-lower alkyl; Y is lower alkylidenyl, 3- to 10-membered cycloalkylidenyl which may be substituted by oxo, alkylenedioxy, hydroxy, acyloxy, lower alkoxy; or Y is 5- to 10-membered cycloalkylidenyl fused to a saturated or unsaturated carbocyclic 5- or 6-membered ring; or Y is 5- to 8-membered oxacycloalkylidenyl, 5- to 8-membered (thia-, oxothia- or dioxothia-) cycloalkylidenyl, or 5- to 8-membered azacycloalkylidenyl optionally N-substituted by lower alkyl or aryl-lower alkyl; R.sub.4 represents hydrogen, lower alkyl, carbocyclic aryl, heterocyclic aryl, cycloalkyl, (carbocyclic aryl, heterocyclic aryl, cycloalkyl, hydroxy, acyloxy, or lower alkoxy)-lower alkyl, lower alkyl substituted by carboxyl, by esterified carboxyl or by amidated carboxyl; Ar represents carbocyclic or heterocyclic aryl; and pharmaceutically acceptable salts thereof; which are useful as endothelin inhibitors in mammals.

Dependencies are inferred from the claim text.