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.
从包括所有可能的消旋或光学活性形式的化合物组中选择的新化合物,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组成的群中选择,以及##STR2##从##STR3##组成的群中选择,以及它们的无毒、药用可接受的酸盐,具有非常好的镇痛活性,以及抗抑郁、神经保护、抗缺氧、抗缺血和神经元活性。