申请人:Fujisiwa Pharmaceutical Co., Ltd.
公开号:US04857513A1
公开(公告)日:1989-08-15
A compound of the formula: ##STR1## wherein R.sup.1 --A-- is a group of the formula: ##STR2## in which R.sup.1 is aryl or a heterocyclic group, each of which may be substituted with substituent(s) selected from the group consisting of lower alkyl, lower alkoxy, lower alkylthio, halo(lower)alkyl, acyl, acylamino and halogen, or lower alkyl which may be substituted with a heterocyclic group optionally substituted with acyl, and X is O or S, and R.sup.2 is hydrogen or lower alkyl, provided that when R.sup.1 is lower alkyl, then R.sup.1 --A-- is a group of the formula: ##STR3## in which R.sup.1 and X are each as defined above, and pharmaceutically acceptable salts thereof, processes for the preparation thereof and pharmaceutical composition comprising the same.
一种化合物的公式为:##STR1##其中R.sup.1 --A--是以下公式的一个基团:##STR2##其中R.sup.1是芳基或杂环基,每个基团可以用来取代的取代基包括下列基团:较低烷基、较低烷氧基、较低烷硫基、卤代(较低)烷基、酰基、酰胺基和卤素,或者可以用杂环基取代的较低烷基,该杂环基可以选择性地用酰基取代,X为氧或硫,R.sup.2为氢或较低烷基,但当R.sup.1为较低烷基时,R.sup.1 --A--是以下公式的一个基团:##STR3##其中R.sup.1和X如上定义,以及其药学上可接受的盐,其制备方法和包含相同的药物组合物。