申请人:Rhone-Poulenc Industries
公开号:US04088761A1
公开(公告)日:1978-05-09
The invention provides novel cephalosporins of the formula: ##STR1## in which R.sub.1 represents acetoxy, (5-methyl-1,3,4-thiadiazol-2-yl)-thio, (1-methyl-tetrazol-5-yl)-thio or [1-(2-hydroxyethyl)-tetrazol-5-yl]-thio and R.sub.2 represents carboxyl, or R.sub.1 represents pyridinio and R.sub.2 the carboxylato ion, and, when R.sub.2 represents carboxyl, their metal salts and addition salts with nitrogen-containing bases, which have useful antibacterial properties.
该发明提供了一种新型头孢菌素,其化学式为:##STR1## 其中R.sub.1代表乙酰氧基,(5-甲基-1,3,4-噻二唑-2-基)-硫,(1-甲基四唑-5-基)-硫或[1-(2-羟乙基)-四唑-5-基]-硫,R.sub.2代表羧基,或者R.sub.1代表吡啶基,R.sub.2代表羧酸根离子,当R.sub.2代表羧基时,其金属盐和与含氮碱基的加和盐具有有用的抗菌性能。