Pyridine derivatives having angiotensin II antagonism

A compound represented by the following formula:

• ##STR45## or a pharmaceutically acceptable salt thereof, wherein R.sup.22 and R.sup.23 each independently represents methyl or ethyl;
• R.sup.24 represents a C.sub.1-8 alkoxy which may be optionally substituted by halogen, C.sub.3-7 cycloalkyl, or carbamoyl which may be optionally substituted by lower alkyl;
• lower alkenyloxy;
• C.sub.3-7 cycloalkyloxy;
• or benzyloxy in which one or more hydrogen atoms on the phenyl group may be optionally substituted by halogen, lower alkyl, lower haloalkyl or lower alkoxy;
• B represents a group COOR.sup.18 wherein R.sup.18 is hydrogen, lower alkyl or a group --CH.sub.2 OCOC(CH.sub.3).sub.3 ;
• or tetrazolyl.