Cimicoxib (UR-8880 trade name Cimalgex) is a nonsteroidal anti-inflammatory drug (NSAID) used in veterinary medicine to treat dogs for pain and inflammation associated with osteoarthritis and for the management of pain and inflammation associated with surgery.[1] It acts as a COX-2 inhibitor.

Synthesis

Cimicoxib synthesis:[2]

Reaction of the imine with TosMIC in the presence of potassium carbonate leads to what may be viewed as 2+3 cycloaddition of the nitrogen analogue of a ketene to form the imidazole ring.

References

  1. ^ "European Public Assessment Report: Cimalgex (cimicoxib)". European Medicines Agency. 17 September 2018.
  2. ^ Almansa, Carmen; Alfón, José; de Arriba, Alberto F.; Cavalcanti, Fernando L.; Escamilla, Ignasi; Gómez, Luis A.; Miralles, Agustí; Soliva, Robert; Bartrolí, Javier; Carceller, Elena; Merlos, Manuel; García-Rafanell, Julián (2003). "Synthesis and Structure−Activity Relationship of a New Series of COX-2 Selective Inhibitors:  1,5-Diarylimidazoles". Journal of Medicinal Chemistry. 46 (16): 3463–3475. doi:10.1021/jm030765s. ISSN 0022-2623. PMID 12877584.