申请人:Otsuka Pharmaceutical Company, Limited
公开号:US04855292A1
公开(公告)日:1989-08-08
Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.2 is 1-pyrrolidinyl which may have 1 to 2 substituents selected from the group consisting of (i) C.sub.1 -C.sub.6 alkyl, (ii) amino-(C.sub.1 -C.sub.6)alkyl, said amino being optionally substituted by 1 or 2 substituents selected from C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkanoyl, and C.sub.1 -C.sub.6 alkoxycarbonyl, (iii) amino which may be substituted by 1 or 2 substituents selected from C.sub.1 -C.sub.6 alkyl, phenyl(C.sub.1 -C.sub.6)alkyl, C.sub.1 -C.sub.6 alkoxycarbonyl, and C.sub.1 -C.sub.6 alkanoyl, and (iv) 2-oxo-1,3-dioxolenemethylamino which is substituted by C.sub.1 -C.sub.6 alkyl; or 1-piperidinyl which may have 1 to 3 substituents selected from oxo, hydroxy, halogen and C.sub.1 -C.sub.6 alkyl, and R.sup.3 is C.sub.1 -C.sub.6 alkyl, or a pharmaceutically acceptable salt thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient.
4-氧喹啉-3-羧酸化合物的结构式:其中R.sup.2为1-吡咯烷基,可以有1到2个取代基,所选自以下组合:(i) C.sub.1-C.sub.6烷基,(ii) 氨基-(C.sub.1-C.sub.6)烷基,该氨基可以选为1或2个取代基,所选自C.sub.1-C.sub.6烷基,C.sub.1-C.sub.6烷酰基和C.sub.1-C.sub.6氧代羰基,(iii) 氨基,可以被1或2个取代基所取代,所选自C.sub.1-C.sub.6烷基,苯基(C.sub.1-C.sub.6)烷基,C.sub.1-C.sub.6氧代羰基和C.sub.1-C.sub.6烷酰基,以及(iv) 2-氧代-1,3-二氧杂环戊烯基氨基,该氨基被C.sub.1-C.sub.6烷基取代;或1-哌啶基,可以有1到3个取代基,所选自氧代、羟基、卤素和C.sub.1-C.sub.6烷基,R.sup.3为C.sub.1-C.sub.6烷基,或其药学上可接受的盐,这些化合物具有出色的抗微生物活性,因此可用作抗微生物药物,并且含有该化合物作为活性成分的药物组合物。