This invention relates to novel substituted ceph-3-ems some of which are of value as intermediates in the synthesis of antimicrobially active cephalosporin analogues whilst others are useful as antimicrobial agents in their own right. The invention is described in Part D of this specification. Parts A, B, C and E relate to starting materials and processes necessary for the preparation of the novel cephems.
本发明涉及新颖的取代的Ceph-3-ems,其中一些在合成具有抗微
生物活性的
头孢菌素类似物的中间体方面具有价值,而另一些则作为抗微
生物剂本身是有用的。该发明在本规范书的D部分中进行了描述。A、B、C和E部分涉及制备新型
头孢菌素的起始材料和过程。