| abstract |
Novel compounds selected from the group consisting of all possible racemic or optically active forms of compounds of the formula <IMAGE> I wherein R1 and R2 are individually selected from the group consisting of hydrogen, alkyl and alkoxy of 1 to 5 carbon atoms, -OH, -CF3 and -NO2 and <IMAGE> is selected from the group consisting of <IMAGE> 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. |