Cephalosporin compounds of the formula:
wherein R1 is amino or protected amino; R2 is substituted or unsubstituted heterocyclic group having 1 - 3 hetero atoms selected from oxygen and sulphur; R3 is carboxyl or protected carboxyl; R4 is nucleophilic compound residue; R5 is carboxyl, protected carboxyl and -COO-, a pharmaceutically acceptable salt thereof and their synthetic intermediate of the formula:
wherein R11 is amino or protected amino; R2 is substituted or unsubstituted heterocyclic group having 1 - 3 hetero atoms selected from oxygen and sulfur; R3 is carboxyl or protected carboxyl; -COOY is carboxyl or protected carboxyl. Said cephalosporin compound is useful as antibacterial agent.
式中的
头孢菌素化合物:
其中 R1 是
氨基或保护
氨基;R2 是具有 1-3 个选自氧和
硫的杂原子的取代或未取代杂环基团;R3 是羧基或保护羧基;R4 是亲核化合物残基;R5 是羧基、保护羧基和-COO-,其药学上可接受的盐及其式中的合成中间体:
其中 R11 是
氨基或保护
氨基;R2 是取代或未取代的杂环基团,具有 1 - 3 个选自氧和
硫的杂原子;R3 是羧基或保护羧基;-COOY 是羧基或保护羧基。所述
头孢菌素化合物可用作抗菌剂。