Molecules (Feb 2015)

Novel Orally Active Analgesic and Anti-Inflammatory Cyclohexyl-N-Acylhydrazone Derivatives

  • Tiago Fernandes da Silva,
  • Walfrido Bispo Júnior,
  • Magna Suzana Alexandre-Moreira,
  • Fanny Nascimento Costa,
  • Carlos Eduardo da Silva Monteiro,
  • Fabio Furlan Ferreira,
  • Regina Cely Rodrigues Barroso,
  • François Noël,
  • Roberto Takashi Sudo,
  • Gisele Zapata-Sudo,
  • Lídia Moreira Lima,
  • Eliezer J. Barreiro

DOI
https://doi.org/10.3390/molecules20023067
Journal volume & issue
Vol. 20, no. 2
pp. 3067 – 3088

Abstract

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The N-acylhydrazone (NAH) moiety is considered a privileged structure, being present in many compounds with diverse pharmacological activities. Among the activities attributed to NAH derivatives anti-inflammatory and analgesic ones are recurrent. As part of a research program aiming at the design of new analgesic and anti-inflammatory lead-candidates, a series of cyclohexyl-N-acylhydrazones 10–26 were structurally designed from molecular modification on the prototype LASSBio-294, representing a new class of cycloalkyl analogues. Compounds 10–26 and their conformationally restricted analogue 9 were synthetized and evaluated as analgesic and anti-inflammatory agents in classical pharmacologic protocols. The cyclohexyl-N-acylhydrazones 10–26 and the cyclohexenyl analogue 9 showed great anti-inflammatory and/or analgesic activities, but compound 13 stood out as a new prototype to treat acute and chronic painful states due to its important analgesic activity in a neuropathic pain model.

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