申请人:Fujisawa Pharmaceutical Company, Ltd.
公开号:US04931555A1
公开(公告)日:1990-06-05
A process for producing a 2-cephem or 3-cephem derivative compound of the formula: ##STR1## wherein R.sub.1 represents a substituted or unsubstituted amino radical and R.sub.4 represents hydrogen or a radical selected from the group consisting of carboxy, protected carboxy, ester, acid amide, acid anhydride, acid halide, acid azide and carboxy salt, and the dotted line indicates the alternate bond structure providing 3-cephem or 2-cephem, which comprises: reacting a halogenated derivative selected from the group consisting of a halogenated penam derivative having the formula: ##STR2## a halogenated cepham derivative of the formula: ##STR3## wherein X represents a halogen atom, R.sub.3 represents a radical selected from the group consisting of carboxy, protected carboxy, ester, acid amide, acid anhydride, acid halide, acid azide and carboxy salt, and R.sub.1 is as defined above, or mixtures thereof with a dehydrohalogenoic acid reagent.
一种制备2-头孢菌素或3-头孢菌素衍生物化合物的方法,其化学式为:##STR1## 其中R.sub.1代表取代或未取代的氨基基团,R.sub.4代表氢或从羧基,保护的羧基,酯,酸酰胺,酸酐,酸卤,酸偶氮和羧酸盐等组成的基团中选择的一个基团,点线表示提供3-头孢菌素或2-头孢菌素的交替键结构,包括:将从以下组成的卤代衍生物与脱卤酸试剂反应:具有以下化学式的卤代penam衍生物:##STR2## 具有以下化学式的卤代cepham衍生物:##STR3## 其中X代表卤原子,R.sub.3代表从羧基,保护的羧基,酯,酸酰胺,酸酐,酸卤,酸偶氮和羧酸盐等组成的基团中选择的一个基团,R.sub.1如上所定义,或其混合物。