申请人:Yamanouchi Pharmaceutical Co., Ltd.
公开号:US05077406A1
公开(公告)日:1991-12-31
A compound of the formula (I) or its salt and a process for producing the compounds; The compounds have the effect to dilate neophrovascular tracts; ##STR1## wherein ##STR2## represents the formula ##STR3## (wherein R.sup.4 is a hydrogen atom or lower alkylsulfonyl); R.sup.1 is hydrogen, lower alkyl, hydroxyl, halogen, amino, or lower acylamino; R.sup.2 is hydrogen, lower alkyl, hydroxyl, amino, or lower alkysulfonylamino; R.sup.3 is hydrogen, lower alkyl, or hydroxyl; R is hydrogen or halogen; with the proviso that when R.sup.1 is hydroxyl, there is no case that all of R.sup.2, R.sup.3 and R are hydrogens, and further with the proviso that when R is hydrogen. A excludes ##STR4## or a salt thereof.
公式(I)的化合物或其盐以及制备这些化合物的方法;这些化合物具有扩张新生肾血管通道的效果;其中##STR2##表示公式##STR3##(其中R.sup.4是氢原子或较低的烷基磺酰基); R.sup.1是氢、较低的烷基、羟基、卤素、氨基或较低的酰胺基; R.sup.2是氢、较低的烷基、羟基、氨基或较低的烷基磺酰胺基; R.sup.3是氢、较低的烷基或羟基; R是氢或卤素; 前提是当R.sup.1是羟基时,不存在所有的R.sup.2、R.sup.3和R都是氢的情况,而且当R是氢时,A排除##STR4##或其盐。