abstract |
(57) [Summary] [Structure] General formula [I] [In the formula, R 1 is a lower alkyl group or the like, R 2 is a hydrogen atom, a lower alkylsulfonyl group or the formula —C (═Z) R 0 Wherein Z represents an oxygen atom or two hydrogen atoms, R 0 represents a lower alkyl group which may have a substituent, and R 3 represents an optionally esterified carboxyl group. A ring, wherein ring A represents a phenyl group which may have a substituent], and an angiotensin II antagonist comprising an imidazopyridine derivative or a pharmaceutically acceptable salt thereof as an active ingredient. [Effect] The compound [I], which is the active ingredient of the present invention, exhibits an excellent angiotensin II antagonistic action and is useful as a preventive / therapeutic agent for hypertension and the like. |