申请人:Banyu Pharmaceutical Co., Ltd.
公开号:US05112818A1
公开(公告)日:1992-05-12
A compound of the formula: ##STR1## wherein R.sup.1 is a hydrogen atom or a methyl group, each of R.sup.2 and R.sup.3 which may be the same or different, is a hydrogen atom or a lower alkyl group, or R.sup.2 and R.sup.3 form together with the adjacent nitrogen atom a heterocyclic group selected from the group consisting of an aziridinyl group, an azetidinyl group, a pyrrolidinyl group, a piperidino group, a piperazinyl group and a morpholino group, A is a carbonyl group or a single bond, and n is an integer of from 0 to 3; or a pharmaceutically acceptable salt or ester thereof.
一种化合物的式子:##STR1##
其中,R.sup.1为氢原子或甲基基团,R.sup.2和R.sup.3可以相同也可以不同,是氢原子或较低的烷基基团,或者R.sup.2和R.sup.3与相邻的氮原子一起形成从以下组中选择的杂环基团:氮杂环丙基基团,氮杂环丁基基团,吡咯烷基基团,哌啶基基团,哌嗪基基团和吗啉基基团,A为羰基团或单键,n为0到3的整数;或其药学上可接受的盐或酯。