申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0330108A1
公开(公告)日:1989-08-30
A compound of the formula :
in which R1 is carboxy or protected carboxy,
R2 is hydroxy(lower)alkyl or protected hydroxy(lower)alkyl,
R3 and R4 are each hydrogen or lower alkyl, and
R5 is aliphatic heterocyclic group, which may be substituted by suitable substituent(s), and pharmaceutically acceptable salts thereof, processes for their preparation and pharmaceutical compositions comprising them as an active ingredient in admixture with a pharmaceutically acceptable carrier or excipient.
式中的化合物
其中 R1 为羧基或受保护的羧基、
R2 是羟基(低级)烷基或受保护的羟基(低级)烷基、
R3 和 R4 分别是氢或低级烷基,以及
R5 是可被适当取代基取代的脂族杂环基团,以及它们的药学上可接受的盐、制备工艺和药物组合物,其中包含它们作为活性成分与药学上可接受的载体或赋形剂混合。