title: Vinylogous amide analogs of methylphenidate.
abstract: In an effort to produce compounds with longer durations of action, we attempted to synthesize ketone analogs of methylphenidate which, however, appear to be highly unstable due to a highly acidic proton alpha to the ketone and phenyl groups. Nevertheless, vinylogous amide by products have been synthesized and tested for activity at dopamine, norepinephrine, and serotonin transporters. The compounds were found to be weak inhibitors of monoamine reuptake despite rigid three dimensional structures that are quite similar to the global minimum of threo-(R,R)-methylphenidate. The structures were confirmed by X-ray crystallography.
authors.affiliation: Massachusetts College of Pharmacy and Health Sciences, 179 Longwood Avenue, Boston, MA 02115, USA. mfroimowitz@bos.mcphs.edu
authors.forename: Mark
authors.initials: M
authors.lastname: Froimowitz
authors.forename: Yonghong
authors.initials: Y
authors.lastname: Gu
authors.forename: Les A
authors.initials: LA
authors.lastname: Dakin
authors.forename: Charles J
authors.initials: CJ
authors.lastname: Kelley
authors.forename: Damon
authors.initials: D
authors.lastname: Parrish
authors.forename: Jeffrey R
authors.initials: JR
authors.lastname: Deschamps
mesh_terms: D000577:Amides / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D002478:Cells, Cultured; D018360:Crystallography, X-Ray; D004298:Dopamine / Q000378:metabolism; D050483:Dopamine Plasma Membrane Transport Proteins; D006801:Humans; D007668:Kidney / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D008562:Membrane Glycoproteins / Q000037:antagonists & inhibitors; D049990:Membrane Transport Modulators; D026901:Membrane Transport Proteins / Q000037:antagonists & inhibitors; D008774:Methylphenidate / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000494:pharmacology; D009419:Nerve Tissue Proteins / Q000037:antagonists & inhibitors; D014179:Neurotransmitter Uptake Inhibitors / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D009638:Norepinephrine / Q000378:metabolism; D050484:Norepinephrine Plasma Membrane Transport Proteins; D011994:Recombinant Proteins / Q000037:antagonists & inhibitors; D012701:Serotonin / Q000378:metabolism; D050486:Serotonin Plasma Membrane Transport Proteins; D027981:Symporters / Q000037:antagonists & inhibitors
chemical_list: D000577:Amides; D050483:Dopamine Plasma Membrane Transport Proteins; D008562:Membrane Glycoproteins; D049990:Membrane Transport Modulators; D026901:Membrane Transport Proteins; D009419:Nerve Tissue Proteins; D014179:Neurotransmitter Uptake Inhibitors; D050484:Norepinephrine Plasma Membrane Transport Proteins; D011994:Recombinant Proteins; C493227:SLC6A2 protein, human; C493230:SLC6A4 protein, human; D050486:Serotonin Plasma Membrane Transport Proteins; D027981:Symporters; D008774:Methylphenidate; D012701:Serotonin; D004298:Dopamine; D009638:Norepinephrine