The present invention relates to compounds of formula (I) wherein R.sub.1 is selected from H and 3-chloro; R.sub.2 is selected from a phenyl group and a pyridyl group; R.sub.3 and R.sub.4 are selected independently of each other from H and methyl; R.sub.5 and R.sub.6 are selected independently of each other from H and a pyridyl-methyl group or both represent an ethyl group; n=0 or 1; R.sub.1, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are not simultaneously H when R.sub.2 is phenyl. The salts of the compounds have a pyridyl group with pharmaceutical acceptable acids are also disclosed.
本发明涉及式(I)化合物,其中R.sub.1从H和3-
氯中选择;R.sub.2从苯基和
吡啶基中选择;R.sub.3和R.sub.4可独立地从H和甲基中选择;R.sub.5和R.sub.6可独立地从H和
吡啶基-甲基或两者都代表乙基中选择;n=0或1;当R.sub.2为苯基时,R.sub.1、R.sub.3、R.sub.4、R.sub.5和R.sub.6不同时为H。还公开了含有药用可接受酸的化合物的
吡啶基盐。