申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0367130A2
公开(公告)日:1990-05-09
A compound of the formula :
wherein
R¹ is alkyl, ar(lower)alkyl which may have suitable substituent(s), or heterocyclic(lower)alkyl,
R² is hydrogen or an acyl group, and
R³ is carboxy(lower)alkyl, protected carboxy(lower)alkyl, carboxyaryl or protected carboxyaryl,
and a pharmaceutically acceptable salt thereof,
processes for their preparation and pharmaceutical compositions comprising them or a pharmaceutically acceptable salt thereof in admixture with pharmaceutically acceptable carriers.
式中的化合物
其中
R¹ 是烷基、可具有适当取代基的芳基(低级)烷基或杂环(低级)烷基、
R² 是氢或酰基,以及
R³ 是羧基(低级)烷基、受保护的羧基(低级)烷基、羧基芳基或受保护的羧基芳基、
及其药学上可接受的盐、
它们的制备工艺以及由它们或其药学上可接受的盐与药学上可接受的载体混合而成的药物组合物。