Synthesis of imidazole derivatives with antimycobacterial activity

Arch Pharm (Weinheim). 2010 Jan;343(1):40-7. doi: 10.1002/ardp.200900149.

Abstract

4-Substituted 1-(p-methoxybenzyl)imidazoles were designed and synthesized in order to mimic parts of the structure of highly potent antimycobacterial 6-aryl-9-(p-methoxybenzyl)purines. 4-Haloimidazoles were subjected to Pd-catalyzed cross-coupling in order to introduce a (hetero)aryl group, or they were converted to Grignard reagents and reacted with (hetero)arylaldehydes. Further transformations of the adducts gave a variety of potential antimycobacterials with different "spacers" between the imidazole and (hetero)aryl group. The adduct from furfural was rearranged to a cyclopentenone derivative when treated with methanol under acidic conditions. Several target compounds exhibited antimycobacterial activity in vitro (IC(90 )13 microg/mL for the best inhibitors), but they were not as active as the most potent purines and pyrimidines synthesized before.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / chemical synthesis*
  • Anti-Bacterial Agents / pharmacology*
  • Imidazoles / chemical synthesis*
  • Imidazoles / pharmacology*
  • Microbial Sensitivity Tests
  • Mycobacterium tuberculosis / drug effects*
  • Structure-Activity Relationship

Substances

  • Anti-Bacterial Agents
  • Imidazoles