申请人:Hoffmann-La Roche Inc.
公开号:US05935950A1
公开(公告)日:1999-08-10
Compounds of formula I ##STR1## wherein R.sup.1 is hydrogen, lower alkyl, cycloalkyl or acetyl; x is CH or N; n is 0, 1 or 2; m is 0 or 1; R.sup.2 is hydrogen, lower alkyl, .omega.-hydroxy alkyl, benzyl or lower alkyl-heterocyclyl, the benzyl and the heterocyclyl group being unsubstituted or substituted with at least one of the groups amino, cyano, carboxy, halogen, hydroxy, lower alkyl, lower alkoxy or --CONR.sub.2, where R is hydrogen or lower alkyl; or R.sup.2 is --CH.sub.2 CONR.sup.4 R.sup.5 ; wherein R.sup.4, R.sup.5 are each independently hydrogen, .omega.-hydroxy-alkyl, phenyl, benzyl, naphthyl or heterocyclyl, the phenyl, benzyl, naphthyl or heterocyclyl groups being unsubstituted or substituted with at least one of the groups optionally protected hydroxy, halogen, optionally substituted lower alkyl, optionally substituted lower alkoxy, .omega.-hydroxyalkyl or cyano; or R.sup.4 and R.sup.5 form together a group of formula ##STR2## with the proviso that when pyridinium ring A is pyridinium-4-yl, m is 1; as well as readily hydrolysable esters thereof, pharmaceutically acceptable salts of said compounds and hydrates of the compounds of formula I and of their esters and salts. These compounds are useful as parenteral antibiotics.
化学式为I的化合物,其中R.sup.1是氢、较低的烷基、环烷基或乙酰基;x是CH或N;n为0、1或2;m为0或1;R.sup.2是氢、较低的烷基、ω-羟基烷基、苄基或较低的烷基-杂环烷基,苄基和杂环烷基基团未取代或取代,取代基包括氨基、氰基、羧基、卤素、羟基、较低的烷基、较低的烷氧基或--CONR.sub.2,其中R为氢或较低的烷基;或R.sup.2为--CH.sub.2 CONR.sup.4 R.sup.5;其中R.sup.4、R.sup.5各自独立地为氢、ω-羟基烷基、苯基、苄基、萘基或杂环烷基,苯基、苄基、萘基或杂环烷基基团未取代或取代,取代基包括可选择保护羟基、卤素、可选择取代的较低烷基、可选择取代的较低烷氧基、ω-羟基烷基或氰基;或R.sup.4和R.sup.5共同形成一个化合物的基团,其化学式为,其中吡啶环A为吡啶-4-基时,m为1;以及这些化合物的可迅速水解酯、所述化合物的药学上可接受的盐以及化合物I的水合物、其酯和盐。这些化合物可用作静脉注射抗生素。