PROBLEM TO BE SOLVED: To provide antibacterial compounds.SOLUTION: Antibacterial compounds represented by formula (II), pharmaceutically acceptable salts, esters or prodrugs thereof, medicinal compositions including the same, methods for treating bacterial infections by administration of such compounds and a method for producing the compound are provided.COPYRIGHT: (C)2010,JPO&INPIT【課題】抗菌性化合物の提供。【解決手段】式(II)を有する化合物ならびにその医薬上許容される塩、エステルまたはプロドラッグ;かかる化合物を含む医薬組成物;かかる化合物を投与することによる細菌感染の治療方法;および該化合物の製法。【選択図】なし