申请人:Wakunaga Pharmaceutical Co., Ltd.
公开号:US07713997B2
公开(公告)日:2010-05-11
The present invention provides an agent which exhibits excellent antibacterial activity, low toxicity, improved bioavailability, and low binding rate to serum proteins. The present invention is directed to a pyridonecarboxylic acid derivative represented by formula (1):
or a salt thereof, wherein R1 represents a methyl group, a fluorine atom, or a chlorine atom; R2 represents a hydrogen atom or a lower alkyl group; R3 represents an isopropyl group or a tert-butyl group; R4 represents a methyl group or a halogen atom; and R5 represents a fluorine atom or a chlorine atom. The present invention is also directed to an antibacterial agent and a medicament containing the derivative or the salt thereof as an active ingredient.
本发明提供了一种具有优异抗菌活性、低毒性、改善生物利用度和低结合率的药剂。本发明涉及一种由公式(1)表示的吡啶酮羧酸衍生物或其盐,其中R1代表甲基基团、氟原子或氯原子;R2代表氢原子或低碳基基团;R3代表异丙基基团或叔丁基基团;R4代表甲基基团或卤原子;R5代表氟原子或氯原子。本发明还涉及一种抗菌剂和含有该衍生物或其盐作为活性成分的药物。