申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0343499A1
公开(公告)日:1989-11-29
A compound of the formula :
in which
R1 is carboxy or protected carboxy,
R2 is hydroxy(lower)alkyl or protected hydroxy(lower)alkyl,
R3 is hydrogen or lower alkyl,
R4 is unsaturated heterocyclic group which may be substituted by suitable substituent(s),
R5 is hydrogen, lower alkanimidoyl or imino-protective group, and
A is lower alkylene,
or 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.
一种式......的化合物
其中
R1 是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 是氢或低级烷基
R4 是不饱和杂环基,可被合适的取代基取代、
R5 是氢、低级烷酰基或亚氨基保护基团,以及
A 是低级亚烷基、
或它们的药学上可接受的盐、它们的制备工艺以及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的药物组合物。