申请人:Synthelabo
公开号:US05663173A1
公开(公告)日:1997-09-02
An optically active isomer or a racemate of a compound of general formula (I) ##STR1## in which either R.sub.1 represents a methoxy or cyclopropylmethoxy group and R.sub.2 represents a hydrogen, chlorine or bromine atom, or R.sub.1 and R.sub.2 together form, and in this order, a group of formula --O--CH.sub.2 --O--, --O--(CH.sub.2).sub.2 --, --O--(CH.sub.2).sub.2 --O-- or --O--(CH.sub.2).sub.3 --O--, R.sub.3 represents a hydrogen atom or an amino group, and R.sub.4 represents a hydrogen, chlorine or bromine atom, in the form of a free base or of a pharmaceutically acceptable acid addition salt.
通式(I)的化合物的光学活性异构体或混合物,其中R.sub.1代表甲氧基或环丙基甲氧基基团,R.sub.2代表氢、氯或溴原子,或R.sub.1和R.sub.2一起形成,并按顺序为--O--CH.sub.2 --O--, --O--(CH.sub.2).sub.2 --, --O--(CH.sub.2).sub.2 --O--或--O--(CH.sub.2).sub.3 --O--的基团,R.sub.3代表氢原子或氨基团,R.sub.4代表氢、氯或溴原子,以游离碱或医药上可接受的酸盐的形式。