Cepham compounds, pharmaceutical compositions containing them and processes for the preparation thereof and of known cephem compounds
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0010667A1
公开(公告)日:1980-05-14
Novel compounds of the formula:
wherein
R' is amino or a protected amino group,
R2 is carboxy or a protected carboxy group,
R3 is formyl, hydroxymethyl or acyloxymethylene, and
X is-S-or-SO-,
e.g. 7-[2-(2-ami nothiazol-4-yl)-2-methoxyimino-acetamido]-3-acetoxymethylenecepham-4-carboxylic acid (syn isomer), salts thereof and processes for their preparation.
The invention also relates to pharmaceutical compositions comprising, as effective ingredients, the above coumpounds in association with a pharmaceutically acceptable, substantially nontoxic carrier or excipient, and to a process for their preparation.
Also a process for preparing known cephem compounds of the formula
starting from some of the above new compounds is described.
式中的新型化合物:
式中
R' 是氨基或受保护的氨基、
R2 是羧基或受保护的羧基
R3 是甲酰基、羟甲基或酰氧基亚甲基,以及
X 是-S-或-SO-、
例如 7-[2-(2-氨基噻唑-4-基)-2-甲氧基亚氨基乙酰氨基]-3-乙酰氧亚甲基樟脑-4-羧酸(异构体),其盐及其制备方法。
本发明还涉及由上述偶联化合物作为有效成分与药学上可接受的、基本上无毒的载体或赋形剂组成的药物组合物及其制备工艺。
还有一种制备已知式 cephem 化合物的工艺
此外,还描述了一种从上述某些新化合物开始制备已知式头孢化合物的工艺。