The present invention relates to cephem-derivatives and to a process for their preparation, having proper substituents at C-2 position, i.e. heterocyclylthio or acyloxy group. They are potent protease inhibitors, in particular human leucocyte elastase (HLE) inhibitors.
These inhibitors can be synthesised by way of a substitution reaction starting from known cephem compounds having a 2-position a suitable leaving group.
本发明涉及头孢烯衍
生物及其制备方法,该衍
生物在C-2位具有适当的取代基,即杂环
硫基或酰氧基。它们是强效的蛋白酶抑制剂,特别是人白细胞
弹性蛋白酶(HLE)
抑制剂。这些
抑制剂可以通过从已知的头孢烯化合物开始,通过取代反应合成,该化合物在2位具有合适的离去基团。