| abstract |
Abstract of the disclosure: Novel cephalosporin compounds of the general formula: wherein R1 represents a substituted or unsubstituted nitrogen-containing heterocyclic-thio group, R2 represents hydrogen or hydroxy, and R3, R4 and R5 each represents hydrogen, hydroxy or acyloxy, and their salts, and processes for the preparation thereof. The novel compounds and their salts have antibacterial activity. |