7-acylamino-3-vinylcephalosporanic acid derivatives of the formula:
in which R1 is amino-substituted-heterocyclic group which may have halogen,
protected amino-substituted-heterocyclic groug which may have halogen, or a group of the formula:
wherein R3 is lower alkyl,
R2 is carboxy or a protected carboxy group,
A is lower alkylene which may have certain substituents
and pharmaceutically acceptable salt thereof and processes fortheir preparation and also a pharmaceutically composition comprising, as an effective ingredient, the above compound in association with pharmaceutically acceptable carriers. The invention also relates to the starting compounds
and other starting compounds and their preparation.
式中的 7-乙酰
氨基-3-
乙烯基头孢烷酸衍
生物:
其中 R1 为可含卤素的
氨基取代的杂环基团、
可含卤素的受保护
氨基取代的
三环基团,或式中的基团
其中 R3 是低级烷基、
R2 是羧基或受保护的羧基、
A 是低级亚烷基,可带有某些取代基
及其药学上可接受的盐和它们的制备工艺,以及包含上述化合物作为有效成分与药学上可接受的载体的药学组合物。本发明还涉及起始化合物
和其他起始化合物及其制备方法。