PROBLEM TO BE SOLVED: To provide a new phenoxyacetic acid derivative expressed by following formula, or its pharmaceutically permissible salt, having excellent &beta3-adrenergic receptor-stimulating effects, and are useful as an agent for preventing or treating obesity, hyperglycemia, diseases caused by intestinal motility sthenia, pollakiuria, urinary incontinence, depression, or diseases caused by biliary calculi or motility sthenia of biliary tract.SOLUTION: A compound expressed by the general formula is provided. (wherein, R1 expresses a hydroxy group or the like either one of R2 or R3 expresses H, a halogen atom or the like and the other expresses H R4 expresses a halogen atom or the like).COPYRIGHT: (C)2009,JPO&INPIT【課題】優れたβ3-アドレナリン受容体刺激作用を有し、肥満症、高血糖症、腸管運動亢進に起因する疾患、頻尿、尿失禁、うつ病、胆石又は胆道運動亢進に起因する疾患の予防又は治療剤として有用な下記一般式で表される新規なフェノキシ酢酸誘導体及びその薬理学的に許容される塩の提供。【解決手段】下記の一般式で表される化合物。(但し、一般式で、R1水酸基等、R2及びR3はどちらか一方が水素原子、ハロゲン原子等であり、他方が水素原子であり、R4はハロゲン原子等である。)【選択図】なし