申请人:Rhone-Poulenc Sante
公开号:US04496560A1
公开(公告)日:1985-01-29
New cephalosporin derivatives, of the formula: ##STR1## in which R.sub.1 is a heterocyclic, phenyl, p-hydroxyphenyl, phenoxy or dichlorophenylthio radical and R.sub.2 is a hydrogen atom, or R.sub.1 is phenyl or p-hydroxyphenyl and R.sub.2 is an amino radical, R.sub.3 is hydrogen, phenyl, substituted phenyl, alkylthio or substituted amino or a radical of the structure --A--R'.sub.3, which A is --CH.sub.2 --, --NH-- or --NHCO-- and R'.sub.3 is a substituted pyridinio radical, R is a carboxyl radical or a carboxylato radical if R.sub.3 is a --AR'.sub.3 radical and X is a sulphur or oxygen atom, the said alkyl moieties or radicals containing 1 to 4 carbon atoms each in their D, L and D,L forms, where these exist, and their salts are narrow-spectrum anti-bacterial agents which are active against gram-positive bacteria.
新头孢菌素衍生物的化学式如下:##STR1## 其中R.sub.1是一个杂环、苯基、对羟基苯基、苯氧基或二氯苯硫基基团,R.sub.2是一个氢原子,或者R.sub.1是苯基或对羟基苯基且R.sub.2是氨基基团,R.sub.3是氢、苯基、取代苯基、烷基硫基或取代氨基或结构为--A--R'.sub.3的基团,其中A是--CH.sub.2--、--NH--或--NHCO--,R'.sub.3是取代吡啶基团,R是一个羧基团或者如果R.sub.3是一个--AR'.sub.3基团则是一个羧酸基团,X是硫或氧原子,所述烷基基团或基团在其D、L和D,L形式中每个含有1到4个碳原子,如果存在的话,它们的盐是针对革兰氏阳性细菌活性的窄谱抗菌剂。