申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04921855A1
公开(公告)日:1990-05-01
A compound of the formula: ##STR1## wherein R.sup.1 is lower alkyl optionally substituted with a substituent selected from the group consisting of acyl, hydroxy, lower alkoxy, aryl, lower alkylthio and a group of the formula: ##STR2## in which R.sup.5 is hydrogen or acyl and R.sup.6 is hydrogen or lower alkyl; aryl; or amino optionally substituted with substituent(s) selected from the group consisting of lower alkyl and acyl; and R.sup.2 is hydrogen or lower alkyl; or R.sup.1 and R.sup.2 are taken together with the attached nitrogen atom to form a heterocyclic group optionally substituted with substituent(s) selected from the group consisting of lower alkyl, hydroxy(lower )alkyl, lower alkoxy(lower)alkyl, acyl(lower)alkyl, oxo and acyl; R.sup.3 is hydrogen or lower alkyl; and R.sup.4 is lower alkyl; and its pharmaceutically acceptable salt, processes for the preparation thereof and pharmaceutical composition comprising the same.
一种化合物的化学式如下:##STR1## 其中R.sup.1是较低的烷基,可选择性地被选自以下群组的取代基取代,所述群组包括酰基、羟基、较低的烷氧基、芳基、较低的烷基硫基和化学式为:##STR2## 其中R.sup.5是氢或酰基,R.sup.6是氢或较低的烷基;芳基;或氨基,可选择性地被选自以下群组的取代基取代,所述群组包括较低的烷基和酰基;R.sup.2是氢或较低的烷基;或R.sup.1和R.sup.2与所连接的氮原子一起形成杂环基,可选择性地被选自以下群组的取代基取代,所述群组包括较低的烷基、羟基(较低的)烷基、较低的烷氧基(较低的)烷基、酰基(较低的)烷基、氧代和酰基;R.sup.3是氢或较低的烷基;R.sup.4是较低的烷基;以及其药学上可接受的盐,其制备方法和包含其的制药组合物。