申请人:Tanabe Seiyaku Co., Ltd.
公开号:US05434148A1
公开(公告)日:1995-07-18
Disclosed are .beta.-carboline derivatives represented by the formula: ##STR1## wherein R.sup.1 represents hydrogen atom, a lower alkyl group, a lower alkoxy group or hydroxy group; R.sup.5 represents hydrogen atom, or R.sup.1 and R.sup.5 are bonded to represent a lower alkylenedioxy group; R.sup.2 represents hydrogen atom, a halogen atom, a lower alkoxy group or hydroxy group; R.sup.3 represents hydrogen atom, a carbamoyl lower alkyl group, a lower alkyl group, a carboxy lower alkyl group or a lower alkoxycarbonyl lower alkyl group; R.sup.4 represents hydrogen atom, a lower alkyl group, a carboxy lower alkyl group, a lower alkoxycarbonyl lower alkyl group, a lower alkanoyl group, an arylcarbonyl group, a lower alkanesulfonyl group, a lower alkoxycarbonyl group, an aralkyl group, formyl group or a di(lower alkyl)sulfamoyl group; n represents 0, 1 or 2; and the symbol * represents an asymmetric carbon atom, or a pharmaceutically acceptable salt thereof, and a process for preparing the same.
本发明公开了由以下式表示的β-咔啉衍生物:其中R.sup.1代表氢原子、低碳基、低烷氧基或羟基;R.sup.5代表氢原子,或R.sup.1和R.sup.5结合表示低烷二氧基基团;R.sup.2代表氢原子、卤原子、低烷氧基或羟基;R.sup.3代表氢原子、碳酰胺低烷基基团、低烷基、羧基低烷基基团或低烷氧羰基低烷基基团;R.sup.4代表氢原子、低烷基、羧基低烷基基团、低烷氧羰基低烷基基团、低烷酰基基团、芳基羰基基团、低烷烷磺基团、低烷氧羰基基团、芳基烷基基团、甲酰基基团或二(低烷基)磺酰基团;n代表0、1或2;符号*表示不对称碳原子,或其药用盐,以及制备它们的方法。