Antibacterial quinolone derivatives represented by the following formula and salts thereof are disclosed.
wherein R¹ means a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted lower alkenyl group or a substituted or unsubstituted phenyl group, R² denotes a hydrogen atom or a carboxyl-protecting group, R³ represents a hydrogen or halogen atom or an amino, mono- or di-(lower alkyl)amino, hydroxyl or lower alkoxyl group, X is a hydrogen or halogen atom, Y means a nitrogen atom or a group C-R⁴ in which R⁴ is a hydrogen or halogen atom or a lower alkyl or lower alkoxyl group or is a group
which forms a ring together with R¹ (i.e., the asterisked carbon atoms are linked to the N(1) atom of the quinolone skeleton), and A denotes a specific N-containing group. Preparation processes of the quinolone derivatives and antibacterial agents containing the same are also disclosed.
本发明公开了下式所代表的抗菌
喹诺酮衍
生物及其盐类。
其中 R¹ 表示取代或未取代的低级烷基、取代或未取代的环烷基、取代或未取代的低级烯基或取代或未取代的苯基,R² 表示氢原子或羧基保护基团、R³ 表示氢原子或卤素原子或
氨基、单-或二-(低级烷基)
氨基、羟基或低级烷氧基, X 表示氢原子或卤素原子,Y 表示氮原子或基团 C-R⁴,其中 R⁴ 是氢原子或卤素原子或低级烷基或低级烷氧基,或者是与 R¹ 一起形成环的基团。
与 R¹ 形成环(即星号碳原子与
喹诺酮骨架的 N(1)原子相连),A 表示特定的含 N 基团。此外,还公开了
喹诺酮衍
生物和含有
喹诺酮衍
生物的抗菌剂的制备工艺。