PROBLEM TO BE SOLVED: To provide compounds having Nav1.7 inhibitory action.SOLUTION: Provided are compounds represented by the formula (I), or pharmaceutically acceptable salts thereof. (In the formula, R1 represents a hydrogen atom, a substituted or unsubstituted alkenyl, a substituted or unsubstituted aromatic carbocyclic group, or a substituted or unsubstituted aromatic heterocyclic group R2 is a substituted or unsubstituted alkyl R3 is a substituted or unsubstituted alkyl and R4 is a substituted or unsubstituted alkyl.)COPYRIGHT: (C)2014,JPO&INPIT【課題】 Nav1.7阻害作用を有する化合物を提供する。【解決手段】式(I):【化1】(式中、R1は、水素原子、置換若しくは非置換のアルケニル、置換若しくは非置換の芳香族炭素環式基、または置換若しくは非置換の芳香族複素環式基;R2は、置換若しくは非置換のアルキル;R3は、置換若しくは非置換のアルキル;R4は、置換若しくは非置換のアルキル)で示される化合物、またはその製薬上許容される塩。【選択図】なし
