A novel thioalkylthio cephalosporin antibiotic compound of formula I: ##STR1## wherein Acyl is C.sub.1 -C.sub.12 acyl; Het is optionally substituted monocyclic heteroaromatic group containing one or more hetero atoms; R.sup.1 is a single bond or C.sub.1 -C.sub.4 alkylene; R.sub.2 is a straight or branched C.sub.1 -C.sub.4 alkylene; X is a sulfur atom or sulioxide group; and Y is a hydrogen atom or methoxy group, or a pharmaceutically acceptable salt or an amino-, carboxy- and/or hydroxy-protected derivative thereof, a formulation containing the same and a method for treating bacterial infections.
化合物I的结构式为:##STR1## 其中Acyl为C.sub.1-C.sub.12酰基;Het为可选的含有一个或多个杂原子的单环杂芳基团;R.sup.1为单键或C.sub.1-C.sub.4烷基;R.sub.2为直链或支链C.sub.1-C.sub.4烷基;X为
硫原子或亚砜基团;Y为氢原子或甲氧基,或其药学上可接受的盐或
氨基、羧基和/或羟基保护衍
生物,以及含有该化合物的制剂和治疗细菌感染的方法。