Carboxymethylidene cycloheptimidazole derivative, process for its preparation and therapeutic agent containing the compound

摘要

The present invention relates to a carboxymethylidene cycloheptimidazole derivative represented by the general formula (1) which is a novel therapeutic agent or an alkali addition salt thereof and a process for producing the same. This compound is useful as a therapeutic agent for hypertension, a therapeutic agent for wilting heart failure, and a hypotensive agent.;Wherein R ₁ represents lower alkyl, R ₂ represents H or isopropyl and R ₃ represents H, lower alkyl or -C (CH ₃ ) H-OCOOR ₄ wherein R ₄ is lower alkyl or cyclohexyl , -CHCOOR ₃ is bonded at the 4 or 8 position, and A represents or .