申请人:Bayer Aktiengesellschaft
公开号:US04956465A1
公开(公告)日:1990-09-11
As novel intermediates for antibacterials, the quinolone- and 1,8-naphthyridine-4-one-carboxylic acids which are C-bonded in the 7-position of the formula ##STR1## in which Y represents a carboxyl group, a nitrile group, an ester group --COOR.sup.3, or an acid amide group --CONR.sup.4 R.sup.5, where R.sup.3 stands for C.sub.1 -C.sub.4 -alkyl, X.sup.2 stands for hydrogen, nitro, alkyl having 1 to 3 carbon atoms and halogen, in particular R.sup.1 can be alkyl having 1-4 carbon atoms, vinyl, halogenoalkyl, hydroxyalkyl, cycloalkyl having 1-6 carbon atoms or optionally substituted phenyl, R.sup.2 stands for hydrogen, alkyl having 1-3 carbon atoms which is optionally substituted by halogen, alkoxy having 1-2 carbon atoms or nitro, phenyl and for a radical ##STR2## and Z.sup.1 and Z.sup.2 can each be hydrogen or various organic radicals or together form a ring, and salts and esters thereof.
作为抗菌剂的新型中间体,喹诺酮和1,8-萘啶-4-酮羧酸,它们在公式##STR1##的7位上与C键结合,其中Y代表一个羧基、一个腈基、一个酯基--COOR.sup.3,或一个酸酰胺基--CONR.sup.4 R.sup.5,其中R.sup.3代表C.sub.1 -C.sub.4-烷基,X.sup.2代表氢、硝基、具有1至3个碳原子的烷基和卤素,特别是R.sup.1可以是具有1-4个碳原子的烷基、乙烯基、卤代烷基、羟基烷基、具有1-6个碳原子的环烷基或可选地取代的苯基,R.sup.2代表氢、具有1-3个碳原子的烷基,可选地通过卤素取代,烷氧基具有1-2个碳原子或硝基,苯基和一个基团##STR2##,而Z.sup.1和Z.sup.2可以分别是氢或各种有机基团,或者一起形成一个环,并且它们的盐和酯。