Starting compounds for preparing cephem compounds and processes for their preparation
申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0064582A1
公开(公告)日:1982-11-17
Starting compounds for preparing cephem compounds of formula
wherein R' is amino or a protected amino and X' is carbonyl or a group of the formula:
in which R2 is hydrogen, acyl, aryl which may be substituted with suitable substituent(s), lower alkyl substituted with suitable substituent(s), lower alkenyl, lower alkynyl, cycloalkyl which may be substituted with suitable substituent(s), cyclo(lower) alkenyl, or S or 0 containing 5-membered heterocyclic group substituted with oxo group(s), and ester and salts thereof, can be prepared by different processes and the cephem compounds, which possess valuable pharmacological properties, can be prepared from such starting compounds.
用于制备式中 R'为氨基或受保护氨基,X'为羰基或式中基团的头孢化合物的起始化合物,其中 R2 为氢、酰基、可被适当取代基取代的芳基、可被适当取代基取代的低级烷基、低级烯基、低级炔基、可被适当取代基取代的环烷基、环(低)烯基、或被氧代基取代的 S 或含 0 的 5 元杂环基团,以及它们的酯和盐,可以通过不同的工艺制备,具有重要药理特性的头孢化合物可以由这些起始化合物制备。