申请人:Imperial Chemical Industries PLC
公开号:US05008259A1
公开(公告)日:1991-04-16
Cephalosporin antibiotics having a 3-position substituent of the formula: ##STR1## are described, wherein R.sup.1 is hydrogen or certain optionally substituted alkyl groups; X is a benzene ring or certain 5 or 6-membered heterocyclic ring and is fused to ring Y which is a nitrogen containing heteroaryl group; R.sup.2 and R.sup.3 are independently hydroxy or an in vivo hydrolysable ester thereof, and ring system X-Y is optionally substituted. Processes for their preparation and use are described.
本文描述了具有公式中3位取代基的头孢菌素抗生素:##STR1## 其中R.sup.1为氢或某些可选取代的烷基基团;X为苯环或某些5或6成员杂环,并与环Y融合,环Y是含氮杂芳基团;R.sup.2和R.sup.3独立地为羟基或其体内可水解酯,环系X-Y是可选的取代基。描述了它们的制备和使用过程。