A process is provided which yields derivatives of cephalosporins and penicillins. The process starts with 7-aminodecephalosporanic acid or 6-APA and reacts with a carbonyl containing compound to form a Schiff's base (imino) adduct. This latter compound is then treated with a defined reactant yielding a novel Schiff's base adduct having a side chain on the carbon adjacent to the imino-nitrogen. The amino moiety can be regenerated and further reacted to form end compounds which are active against both gram-positive and gram-negative bacteria.
                            提供了一种制备
头孢菌素和
青霉素衍
生物的方法。该方法从7-
氨基头孢菌烷酸或6-APA开始,与含有羰基的化合物反应,形成席夫碱(
亚胺)加合物。然后,用一种定义的反应剂处理这种化合物,得到一种新的席夫碱加合物,其侧链位于
亚胺-氮的相邻碳上。
氨基基团可以再生并进一步反应,形成对革兰氏阳性和阴性细菌都具有活性的最终化合物。