申请人:Rhone-Poulenc Sante
公开号:US04508717A1
公开(公告)日:1985-04-02
Cephalosporin derivatives of the formula: ##STR1## in which A is a single bond or a radical --CH.sub.2 --, --NH-- or --NHCO--, attached to the 3-position or 4-position of the pyridinio radical, R is a methyl, carboxymethyl, carbamoylmethyl, benzyl or allyl radical, R.sub.a, R.sub.b and R.sub.c are hydrogen atoms, or alternatively R.sub.a is carboxyl and R.sub.b and R.sub.c, which are identical or different, are hydrogen atoms or alkyl radicals, or together form an alkylene radical, and n equals 0 or 1, in their syn form, and also their addition salts with acids, metal salts and addition salts with nitrogen-containing bases are antibacterial agents having a broad spectrum of activity.
公式为:##STR1##中的头孢菌素衍生物,其中A是连接到吡啶基的3位或4位的单键或基团--CH.sub.2 --,--NH--或--NHCO--,R是甲基、羧甲基、氨甲基、苄基或烯丙基基团,R.sub.a、R.sub.b和R.sub.c是氢原子,或者R.sub.a是羧基,R.sub.b和R.sub.c(相同或不同)是氢原子或烷基基团,或者共同形成一个烷基基团,n等于0或1,在它们的同形式中,以及它们与酸的加成盐、金属盐和与含氮碱的加成盐是具有广谱活性的抗菌剂。