申请人:Ciba-Geigy Corporation
公开号:US03954802A1
公开(公告)日:1976-05-04
6-Acylamino-penam-3-carboxylic acids and 7-acylamino-3-cephem-4-carboxylic acids in which the acyl group has the formula ##EQU1## in which R.sub.1 is hydrogen, R.sub.2 is optionally substituted phenyl, thienyl or furyl, or R.sub.1 and R.sub.2 together are optionally substituted cycloalkyl, and B is a radical which is bonded via a sulphur atom or is bonded to oxygen or sulphur with the interposition of an optionally substituted CH.sub.2 -group.
6-酰胺基青霉烯-3-羧酸和7-酰胺基-3-头孢菌素-4-羧酸,其中酰基的化学式为##EQU1## 其中R.sub.1是氢,R.sub.2是可选取代的苯基,噻吩基或呋喃基,或R.sub.1和R.sub.2一起是可选取代的环烷基,而B是通过硫原子结合或通过一个可选取代的CH.sub.2基团与氧或硫结合的基团。