Design, synthesis and preliminary pharmacological evaluation of new piperidine and piperazine derivatives as cognition-enhancers

Bioorg Med Chem. 2008 Feb 1;16(3):1431-43. doi: 10.1016/j.bmc.2007.10.050. Epub 2007 Oct 22.


A series of 2-oxopiperazine, 4-aminomethyl-, 3-amino- and 3-aminomethylpiperidine analogues of DM235 (sunifiram) and MN19 (sapunifiram), two previously reported potent cognition-enhancers, have been synthesized and tested in the mouse passive-avoidance test. The compounds display minimal effective doses in the range 0.3-10mg/kg. Although the new substances do not show improved activity when compared to the parent compounds, some useful information has been obtained to understand structure-activity relationships. In addition, the 3-aminopiperidine moiety appears to be a promising scaffold to synthesize new drugs endowed with cognition-enhancing activity.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Acylation
  • Animals
  • Cognition / drug effects*
  • Drug Design*
  • Mice
  • Molecular Structure
  • Piperidines / chemical synthesis*
  • Piperidines / chemistry
  • Piperidines / pharmacology*
  • Structure-Activity Relationship
  • Sulfur / chemistry


  • Piperidines
  • piperidine
  • Sulfur