申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04094872A1
公开(公告)日:1978-06-13
7-[.beta.-Aminoacylamino]-3-substituted-3-cephem-4-carboxylic acid derivatives of the formula: ##STR1## wherein R.sub.1 is hydrogen, lower alkyl, lower alkenyl, aryl or a heterocyclic group, R.sub.2 is hydrogen or lower alkyl, or R.sub.1 and R.sub.2 mean, taken together with the adjacent carbon atom, cycloalkyl or cycloalkenyl, R.sub.3 is hydrogen, lower alkylthio or a hetero cyclic-thio group, and M is hydrogen or a nontoxic, pharmaceutically acceptable cation, Processes for the preparation of the same and composition thereof. These compounds are useful as antibacterial agents.
7- [β-氨基酰氨基]-3-取代-3-头孢素-4-羧酸衍生物的化学式:其中R₁为氢、较低的烷基、较低的烯基、芳基或杂环基,R₂为氢或较低的烷基,或R₁和R₂结合在一起与相邻的碳原子形成环状烷基或环状烯基,R₃为氢、较低的烷基硫基或杂环硫基,M为氢或非毒性、药用可接受的阳离子,制备这些化合物的方法及其组成物。这些化合物可用作抗菌剂。