Differences in antiwrithing activity of morphine and nalorphine over time and in slopes of the dose-response lines.
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A number of N-substituted 2,3-dimethyl-3-arylpiperidines having an m- or p-arylhydroxyl were prepared and evaluated for analgesic agonist and antagonist properties. The diastereomeric N-allyl and N-cyclopropylmethyl derivatives behaved as pure potent antagoinists. Substitution of the arylhydroxyl from the meta to the para position resulted in a net fall of the antagoinist activity.
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