Offer of the new aniline compound which is displayed with below-mentioned general formula (i) it possesses the bronchial extended operation which is based on powerful EP2 agonisuto operation and is superior. General formula (i):So the chemical compound which is displayed or that salt.強力なEP2アゴニスト作用に基づく優れた気管支拡張作用を有する下記一般式(I)で表される新規なアニリン化合物の提供。一般式(I):で表される化合物又はその塩。