Novel cephalosporin compounds of the general formula: ##STR1## wherein R.sub.1 represents a substituted or unsubstituted nitrogen-containing heterocyclic-thio group, R.sub.2 represents hydrogen or hydroxy, and R.sub.3, R.sub.4 and R.sub.5 each represents hydrogen, hydroxy or acyloxy, and their salts, and processes for the preparation thereof. The novel compounds and their salts have antibacterial activity.
一种新型
头孢菌素化合物,其一般式为:##STR1## 其中R.sub.1代表取代或未取代的含氮杂环
硫基,R.sub.2代表氢或羟基,R.sub.3、R.sub.4和R.sub.5分别代表氢、羟基或酰氧基,以及它们的盐,并提供制备它们的方法。这种新型化合物及其盐具有抗菌活性。