Synthesis and biological evaluation of 2beta,3alpha-(substituted phenyl)nortropanes as potential norepinephrine transporter imaging agents

Bioorg Med Chem Lett. 2007 Jun 1;17(11):3044-7. doi: 10.1016/j.bmcl.2007.03.056. Epub 2007 Mar 23.

Abstract

A series of 2beta,3alpha-(substituted phenyl)nortropanes was synthesized and evaluated in vitro for human monoamine transporters. All compounds studied in this series exhibited nanomolar potency for the norepinephrine transporter (NET). Radiolabeling and nonhuman primate microPET brain imaging studies were performed with the most promising compound, [(11)C]1, to determine its utility as a NET imaging agent. Despite high in vitro affinity for the human NET, the high uptake of [(11)C]1 in the caudate and putamen excludes its use as an in vivo PET imaging agent for the NET.

MeSH terms

  • Animals
  • Brain / diagnostic imaging
  • Brain Chemistry
  • Carbon Radioisotopes / analysis
  • Carbon Radioisotopes / chemistry
  • Carbon Radioisotopes / metabolism
  • Diagnostic Imaging*
  • Humans
  • Macaca mulatta
  • Norepinephrine Plasma Membrane Transport Proteins / analysis*
  • Nortropanes / chemical synthesis
  • Nortropanes / chemistry*
  • Nortropanes / pharmacokinetics*
  • Positron-Emission Tomography*

Substances

  • Carbon Radioisotopes
  • Norepinephrine Plasma Membrane Transport Proteins
  • Nortropanes