The purpose of the present invention is to provide a novel compound having TRPA1 antagonist activity, a medicine containing the compound, and a pharmaceutical agent applicable to prophylaxis or treatment of diseases associated with TRPA1 antagonists and TRPA1. This compound represented by formula (I): [in the formula, each symbol is as defined in the description] or a pharmaceutically acceptable salt thereof, and a medicine or the like containing the compound or a pharmaceutically acceptable salt thereof, have TRPA1 antagonist activity, and are applicable to prophylaxis or treatment of diseases associated with TRPA1 antagonists and TRPA1.
