Novel compounds selected from the group consisting of all possible racemic or optically active forms of compounds of the formula ##STR1## wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of hydrogen, alkyl and alkoxy of 1 to 5 carbon atoms, -OH, -CF.sub.3 and -NO.sub.2 and ##STR2## is selected from the group consisting of ##STR3## and their non-toxic, pharmaceutically acceptable acid addition salts having a very good analgesic activity as well as antidepressive, neuronal protective, anti-anoxic, anti-ischemic and no-otropic activities.
从所有可能的外消旋或光学活性化合物中选择新化合物,其
化学式为##STR1##其中R.sub.1和R.sub.2分别从氢,1至5个碳原子的烷基和烷氧基,-OH,-CF.sub.3和-NO.sub.2的群中选择,且##STR2##从##STR3##的群中选择,它们的非毒性,药学上可接受的酸盐具有极好的镇痛活性,以及抗抑郁,神经保护,抗缺氧,抗缺血和神经元活性活性。