This invention provides a compound of the formula (I): ##STR1## and its pharmaceutically acceptable salts, wherein A.sup.1 and A.sup.2 are each halo; R.sup.1 and R.sup.2 are independently C.sub.1-4 alkyl; R.sup.3 is substituted or unsubstituted, phenyl or naphthyl; Y is heterocyclic group selected from C.sub.5-10 azacycloalkyl, C.sub.6-10 diazacycloalkyl, C.sub.7-10 azabicycloalkyl and the like; and R.sup.4 is selected from (a) substituted or unsubstituted C.sub.1-8 alkyll; (b) substituted or unsubstituted amino; (c) substituted or unsubstituted C.sub.2-6 alkanoyl; (d) substituted or unsubstituted C.sub.3-8 cycloalkyl or C.sub.7-14 bicycloalkyl; (e) substituted or unsubstituted C.sub.5-10 azacycloalkyl or C.sub.6-10 diazacycloalkyl, and (f) substituted or unsubstituted C.sub.7-14 mono- or di-azabicycloalkyl. These compounds are useful for the treatment of medical conditions caused by bradykinin such as inflammation, cardiovascular disease, pain, etc. This invention also provides a pharmaceutical composition comprising the above compound, and intermediates of the above compounds.