申请人:Yoshitomi Pharmaceutical Industries, Ltd.
公开号:US04889857A1
公开(公告)日:1989-12-26
A quinolonecarboxylic acid compound of the formula: ##STR1## wherein R.sup.1 is an alkyl group, a cycloalkyl group, a haloalkyl group, an alkenyl group, mono- or di-alkylamino groups, a phenyl group or a phenyl group substituted by one to three substituents selected from the group consisting of a halogen atom, an alkyl group, an alkoxy group, a hydroxy group, a nitro group or an amino group, R.sup.2 is a hydrogen atom, an alkyl group, a cycloalkyl group, an acyl group or an alkoxycarbonyl group, R.sup.3 is a hydrogen atom, an alkyl group or an aralkyl group, or R.sup.2 and R.sup.3 together with the adjacent nitrogen atom form a heterocyclic ring, R.sup.4 is a hydrogen atom or an alkyl group, R.sup.5 is a hydrogen atom, an alkyl group, an aralkyl group or an ester residue which is readily hydrolyzable in vivo, X is a hydrogen atom, a halogen atom or an alkyl group, n is interger of 1 to 3, and a salt thereof, and pharmaceutical use thereof. The compounds exhibit antibacterial activites and are useful for the treatment of various infectious diseases.
一种喹诺酮羧酸化合物,其结构式如上:##STR1##其中,R1为烷基、环烷基、卤代烷基、烯基、单或双烷基氨基、苯基或被一个至三个选自卤素、烷基、烷氧基、羟基、硝基或氨基的取代基取代的苯基;R2为氢、烷基、环烷基、酰基或烷氧羰基;R3为氢、烷基或芳烷基,或者R2和R3与相邻的氮原子一起形成杂环;R4为氢或烷基;R5为氢、烷基、芳烷基或体内易水解的酯残基;X为氢、卤素或烷基;n为1至3的整数;及其盐,以及其在医药上的用途。这些化合物具有抗菌活性,可用于治疗各种感染性疾病。