Novel compounds of the formula: STR1 wherein R1 is a variable consisting of hydrogen, alkyl of from 1 to 8 carbon atoms, CH2 -alkenyl wherein alkenyl is from 2 to 4 carbon atoms, inclusive, cycloalkyl of from 3 to 6 carbon atoms, inclusive, cycloalkylmethyl of from 3 to 6 carbon atoms, inclusive; R2 is a variable consisting of hydrogen, alkyl of from 1 to 8 carbon atoms, inclusive, with the proviso that R1 and R2 cannot both be hydrogen at the same time; Y is a variable consisting of alkyl of from 1 to 4 carbon atoms, inclusive, halogen, trifluoromethyl, hydroxy, alkanoyloxy from 2 to 5 carbon atoms, inclusive, alkoxy of from 1 to 4 carbon atoms, inclusive, cycloalkyloxy of from 3 to 6 carbon atoms, inclusive, benzyloxy; m is an integer 0, 1, 2; R5 is a variable consisting of hydrogen and alkyl of from 1 to 4 carbon atoms, inclusive; R3 is a variable consisting of alkyl of from 1 to 4 carbon atoms, inclusive; R4 is a variable consisting of alkyl of from 1 to 4 carbon atoms, inclusive, CH2 -alkenyl wherein alkenyl is of from 2 to 4 carbon atoms, inclusive, and arylalkyl wherein alkyl is from 1 to 4 carbon atoms, inclusive, and aryl is STR2 WHEREIN Y' is CF3, halogen, alkyl of 1 to 4 carbon atoms, inclusive, and alkoxy of from 1 to 4 carbon atoms, inclusive; and R3 and R4 when taken together with the nitrogen atom to which they are attached can form saturated heterocycles of from 5 to 7 ring members, a second hetero atom of said ring can be oxygen or nitrogen, e.g., morpholine, piperazine, and said heterocycles can be monosubstituted having a total of up to 9 carbon atoms, with the proviso that when STR3 is pyrrolidinyl, then m = 1, 2, having analgetic activity in humans and animals are prepared in unit dosage forms. The compositions are useful in relieving pain by administering orally, parenterally, and rectally to humans and animals.