Benzo[ij]quinolizine-2-carboxylic acid derivatives of the general formula [I] and the salts, and their hydrates are provided:
wherein A is a methylene group and B is a carbonyl group when A and B are linked by a single bond, or A and B unite together to form a vinylene group when A and B are linked by a double bond, R1 is a hydrogen atom, a Cl-3 alkyl group or a 2-hydroxyethyl group, R2 and R3 are hydrogen atoms, methyl groups or ethyl groups and may be identical to or different from each other, R3 may be attached to the same carbon atom as R2, R4 is a methyl or ethyl group, and X is a halogen atom. The benzo-[ij]quinolizine-2-carboxylic acid derivatives and the salts, and their hydrates have good absorbability from the digestive tract into the circulating blood and exhibit excellent and long-lasting antibacterial activity.
本发明提供了通式[I]的苯并[ij
]喹嗪-2-
羧酸衍
生物及其盐类和它们的
水合物:
其中,当 A 和 B 通过单键连接时,A 是亚甲基,B 是羰基;当 A 和 B 通过双键连接时,A 和 B 结合在一起形成
乙烯基;R1 是氢原子、Cl-3 烷基或 2-羟乙基;R2 和 R3 是氢原子、甲基或乙基,可以彼此相同或不同;R3 可以连接到与 R2 相同的碳原子上;R4 是甲基或乙基;X 是卤素原子。苯并-[ij
]喹嗪-2-
羧酸衍
生物及其盐类和它们的
水合物具有良好的从消化道进入血液循环的可吸收性,并表现出卓越而持久的抗菌活性。