There are presented antibacterial cephalosporine having broad antimicrobial activity, having the formula ##STR1## wherein R is hydrogen or a carboxylic acid-protecting group: R.sub.1 represents a substituted piperazinyl group of formula ##STR2## or a substituted pyrrolidinylamino group of formula ##STR3## or a substituted pyrrolidinylmethylamino group of formula ##STR4## where the piperazinyl or pyrrolidinyl group may be optionally substituted with one or more lower alkyl groups, and where Q represents a substituted quinolinyl or naphthyridinyl group: R.sub.2 is selected from the group consisting of hydrogen, lower alkoxy, lower alkylthio and amido; R.sub.3 is hydrogen or an acyl group: and m is 0, 1 or 2, but preferably 0; as well as the corresponding readily hydrolyzable esters. pharmaceutically acceptable salts and hydrates of these compounds.
介绍了一种广谱抗微
生物活性的抗菌
头孢菌素,其
化学式为 ##STR1## 其中 R 为氢或
羧酸保护基: R.sub.1 表示式为 ##STR2## 的取代
哌嗪基团或式为 ##STR3## 的取代
吡咯烷基
氨基团或式为 ##STR4## 的取代
吡咯烷基甲基
氨基团,其中
哌嗪基团或
吡咯烷基团可以选择性地被一个或多个较低的烷基基团取代,Q 代表取代的
喹啉基或
萘啉基: R.sub.2 选自氢、较低的烷氧基、较低的烷基
硫基和酰胺基组成的群; R.sub.3 为氢或酰基基团:m 为0、1或2,但最好为0;以及这些化合物的相应易
水解的酯、药学上可接受的盐和
水合物。