Design and synthesis of novel neuroprotective 1,2-dithiolane/chroman hybrids

Bioorg Med Chem. 2009 Sep 1;17(17):6432-41. doi: 10.1016/j.bmc.2009.07.010. Epub 2009 Jul 9.

Abstract

Novel 1,2-dithiolane/chroman hybrids bearing heterocyclic rings such as 1,2,4- and 1,3,4-oxadiazole, 1,2,3-triazole and tetrazole were designed and synthesized. The neuroprotective activity of the new analogues was tested against oxidative stress-induced cell death of glutamate-challenged HT22 hippocampal neurons. Our results show that bioisosteric replacement of amide group in 2-position of the chroman moiety, by 1,3,4-oxadiazole did not affect activity. However, analogue 5 bearing the 1,2,4-oxadiazole moiety showed improved neuroprotective activity. The presence of nitrogen heterocycles strongly influences the neuroprotective activity of 5-substituted chroman derivatives, depending on the nature of heterocycle. Replacement of the amide group of the first generation analogues by 1,2,4-oxadiazole or 1,2,3-triazole resulted in significant improvement of the activity against glutamate induced oxidative stress.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Chromans / chemical synthesis*
  • Chromans / chemistry
  • Chromans / pharmacology
  • Drug Design
  • Hippocampus / drug effects
  • Mice
  • Neurons / drug effects
  • Neuroprotective Agents / chemical synthesis*
  • Neuroprotective Agents / chemistry
  • Neuroprotective Agents / pharmacology
  • Oxidative Stress
  • Thioctic Acid / analogs & derivatives*
  • Thioctic Acid / chemical synthesis
  • Thioctic Acid / chemistry
  • Thioctic Acid / pharmacology

Substances

  • 1,2-dithiolane
  • Chromans
  • Neuroprotective Agents
  • Thioctic Acid