New intermediates for the preparation of cephem compounds, processes for the preparation thereof and their use
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0300121A2
公开(公告)日:1989-01-25
New Compounds of the formula:
wherein X is -SCN or -(R⁶)₂ (wherein R⁶ is lower alkyl),
and
R is carboxy or -COO⊖,
with proviso that i) when X is -SCN, then R is carboxy, and ii) when X is -(R⁶)₂, then R is -COO⊖,
and a salt thereof, a process for preparing them and their use. The new compounds are useful intermediates for the preparation of pharmaceutically active cephem compounds.
式中的新化合物:
其中 X 为-SCN 或-(R⁶)₂(其中 R⁶ 为低级烷基)、
和
R 是羧基或-COO⊖、
但 i) 当 X 为-SCN 时,R 为羧基;以及 ii) 当 X 为-(R⁶)₂ 时,R 为-COO⊖、
及其盐、制备方法和用途。这些新化合物是制备具有药物活性的头孢化合物的有用中间体。