2-Arylthiomorpholine derivatives as potent and selective monoamine oxidase B inhibitors

Susan Luehr, Marcelo Vilches-Herrera, Angelica Fierro, Rona R. Ramsay, Dale E. Edmondson, Miguel Reyes-Parada, Bruce K. Cassels, Patricio Iturriaga-Vasquez

Research output: Contribution to journalArticlepeer-review

Abstract

2-Arylthiomorpholine and 2-arylthiomorpholin-5-one derivatives, designed as rigid and/or non-basic phenylethylamine analogues, were evaluated as rat and human monoamine oxidase inhibitors. Molecular docking provided insight into the binding mode of these inhibitors and rationalized their different potencies. Making the phenylethylamine scaffold rigid by. xing the amine chain in an extended six-membered ring conformation increased MAO-B (but not MAO-A) inhibitory activity relative to the more flexible alpha-methylated derivative. The presence of a basic nitrogen atom is not a prerequisite in either MAO-A or MAO-B. The best K-i values were in the 10(8) M range, with selectivities towards human MAO-B exceeding 2000-fold. (C) 2010 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1388-1395
Number of pages8
JournalBioorganic & Medicinal Chemistry
Volume18
Issue number4
DOIs
Publication statusPublished - 15 Feb 2010

Keywords

  • Monoamine oxidase
  • MAO inhibitors
  • Arylthiomorpholine derivatives
  • Amphetamine
  • Human and rat MAO
  • Docking
  • MAO-B
  • BIOLOGICAL-ACTIVITIES
  • ALZHEIMERS-DISEASE
  • ANALOGS
  • INSIGHTS
  • INACTIVATION
  • RECOGNITION
  • SAFINAMIDE
  • DOCKING

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