| 摘要 |
Compounds of the formula <CHEM> in which R1 is hydrogen, alkyl of from 1 to 3 carbon atoms, cycloalkyl-C1-C3-alkyl wherein the cycloalkyl radical has 3 to 6 carbon atoms, or aralkyl having up to 8 carbon atoms, X and Y are the same or different and each can be chlorine, bromine, fluorine, alkoxy or alkyl each of from 1 to 3 carbon atoms, hydroxy, or trifluoromethyl; m is the integer 0, 1 or 2; and n is the integer 0, 1, 2 or 3, pharmaceutical compositions containing them and a method for preparing these compounds are described. The compounds are useful as analgetics and anticonvulsants.
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