Six compcunds having structural features in common with l-methyl-4-phenyl-l, 2, 3, 6- tetrahydropyridine(MPTP) were synthesized and tested in mice for the ability to produce a prolonged decrease in nigrostriatal dopamine (DA) and DA metabolites. The compounds that were prepared and tested include the ester elimination products of the analgetic drugs a- prodine and trimeperidine. None of the compounds in this study, except for MPTP, ...