PROBLEM TO BE SOLVED: To provide a method for producing a compound to inhibit MEK, useful for the treatment of an exuberant disorder such as cancer.SOLUTION: The present invention provides a compound represented by formula I (ring A is arylene or hetero arylene; X is alkyl, halo, halo (C1-C8) alkyl or halo (C1-C6) alkoxy; R1-R4 independently represent hydrogen, (C1-C8) alkyl, or halo (C1-C8) alkyl; R5 is hydrogen, halo or (C1-C8) alkyl).SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】癌などの過剰増殖性障害の処置のために有効なMEKを阻害するある化合物の製造方法の提供【解決手段】式Iで表される化合物の提供。(環Aはアリーレン又はヘテロアリーレン;Xは、アルキル、ハロ、ハロ(C1-C8)アルキル又はハロ(C1-C6)アルコキシ;R1~R4は各々独立して、水素、(C1-C8)アルキル、又はハロ(C1-C8)アルキル;R5は水素、ハロ又は(C1-C8)アルキル)【選択図】なし