申请人:Daiichi Sankyo Company, Limited
公开号:EP1882689A1
公开(公告)日:2008-01-30
A quinolone synthetic antibacterial agent and a therapeutic agent for an infection which exhibit broad spectrum and strong antibacterial activity for both Gram positive and Gram negative bacteria, and which are also highly safe are provided. The compound provided is represented by following formula (I):
wherein R1 and R2 represent hydrogen atom, or the like; R3 represents an alkyl group containing 1 to 6 carbon atoms, or the like; R4 and R5 independently represents hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, or the like, with the proviso that R4 and R5 do not simultaneously represent hydrogen atom; or the substituents R4 and R5 together represent (a) a 3- to 6-membered cyclic structure including the carbon atom shared by R4 and R5 to form a spirocyclic structure with the pyrrolidine ring; R6 and R7 independently represents hydrogen atom, an alkyl group containing 1 to 6 carbon atoms, or the like; R8 represents a halogen-substituted alkyl group containing 1 to 6 carbon atoms, or the like; X1 represents hydrogen atom or a halogen atom; A represents nitrogen atom or a moiety represented by formula (II):
本发明提供了一种喹诺酮类合成抗菌剂和一种治疗感染的药物,对革兰氏阳性菌和革兰氏阴性菌均具有广谱、强效的抗菌活性,而且安全性高。所提供的化合物由下式(I)表示:
其中 R1 和 R2 代表氢原子或类似物;R3 代表含有 1 至 6 个碳原子的烷基或类似物;R4 和 R5 独立地代表氢原子、含有 1 至 6 个碳原子的烷基或类似物,但 R4 和 R5 不同时代表氢原子;或取代基 R4 和 R5 共同代表 (a) 3 至 6 元环状结构,包括 R4 和 R5 共用的碳原子,与吡咯烷环形成螺环结构;R6 和 R7 独立代表氢原子、含 1 至 6 个碳原子的烷基或类似物;R8 代表含 1 至 6 个碳原子的卤素取代烷基或类似物;X1 代表氢原子或卤素原子;A 代表氮原子或式 (II) 所代表的分子: