The present invention provides a compound of the formula (1):
and pharmaceutically acceptable salts and in-vivo hydrolysable esters thereof wherein R' is carboxy, R2 is hydrogen or carboxy, R3 is hydrogen, acyl, C1-6 alkyl or C2-6 alkenyl, any of such R3 groups being optionally substituted, and R4 is an amino or protected amino group.
Processes for the preparation of these compounds are described as is their use in the treatment of bacterial infection.
本发明提供了式 (1) 的化合物:及其药学上可接受的盐类和体内可
水解的
酯类,其中 R' 为羧基,R2 为氢或羧基,R3 为氢、酰基、C1-6 烷基或 C2-6 烯基,其中任何一个 R3 基团均可被任选取代,R4 为
氨基或受保护的
氨基。 本发明描述了这些化合物的制备过程及其在治疗细菌感染中的用途。