4,5,6,7-TETRAHYDRO-1H-IMIDAZO 4,5-C PYRIDINE-6-CARBOXYLIC ACID AMIDE DERIVATIVES AS ANGIOTENSINE II ANTAGONISTES

A compound of formula (I): or a pharmaceutically acceptable salt thereof; wherein R represents hydrogen, halogen, C1-C6 alkyl, C3-C6 alkenyl, C3-C6 alkynyl, R (CH2)n- wherein R represents C3-C8 cycloalkyl, naphthyl, phenyl, or phenyl substituted with one to five of C1-C4 alkyl, halogen atom, trifluoromethyl, hydroxy, C1-C4 alkoxy, C1-C3 acyloxy, amino, N-mono-C1-C4 alkylamino, N-di-C1-C4 alkylamino, C1-C4 thioalkyl, C1-C3 alkylsulfonyl, nitro, and -NHCOR wherein R represents C1-C3 alkyl, phenyl, C1-C3 alkylphenyl, aminophenyl, or C1-C4 alkylaminophenyl, and n is an integer of 1 to 6, R -C(O)- wherein R is as defined above, or R -CH(OH)- wherein R is as defined above; R represents carbamoyl, mono- or di-C1-C6 alkylcarbamoyl, or 4- to 6-membered heterocyclic carbamoyl; R represents amino, carboxy, (1H-tetrazol-5-yl)phenyl, carboxyphenyl, carboxybenzamido, (1H-tetrazol-5-yl)benzamido, carboxyphenylcarbamoyl, or (1H-tetrazol-5-yl)-phenylcarbamoyl; R represents -CH2(phenyl), -CH(phenyl)2, -CH(phenyl)CH3, -CH(phenyl) (cyclohexyl), -CH2CH2(phenyl), -CH2(C1-C6 alkoxyphenyl), or -CH2(hydroxyphenyl); and R , R , and R each independently represents hydrogen or C1-C6 alkyl, is an angiotensin II antagonist.