Pyridin-2(1H)one derivatives: A possible new class of therapeutics for mechanical allodynia.

Abstract

Mechanical Allodynia (MA), a frequent chronic pain symptom caused by innocuous stimuli, constitutes an unmet medical need, as treatments using analgesics available today are not always effective and can be associated with important side-effects. A series of 3,5-disubstituted pyridin-2(1H)-ones was designed, synthesized and evaluated in vivo toward a rat model of inflammatory MA. We found that the series rapidly and strongly prevented the development of MA. 3-(2-Bromophenyl)-5-(phenylamino)pyridin-2(1H)-one 69, the most active compound of the series, was also able to quickly reverse neuropathic MA in rats. Next, when 69 was evaluated toward a panel of 50 protein kinases (PK) in order to identify its potential biological target(s), we found that 69 is a p38α MAPK inhibitor, a PK known to contribute to pain hypersensitivity in animal models. 3,5-Disubstituted pyridin-2(1H)-ones thus could represent a novel class of analgesic for the treatment of MA.

• Authors: Alexia Visseq, Amélie Descheemaeker, Nicolas Pinto-Pardo, Lionel Nauton, Vincent Théry, Francis Giraud, Isabelle Abrunhosa-Thomas, Alain Artola, Fabrice Anizon, Radhouane Dallel, Pascale Moreau
• Journal: European journal of medicinal chemistry (Eur J Med Chem) Vol. 187 Pg. 111917 (Feb 01 2020) ISSN: 1768-3254 [Electronic] France
• PMID: 31806536 (Publication Type: Journal Article)
• Copyright: Copyright © 2019 Elsevier Masson SAS. All rights reserved.

Chemical References

• Analgesics
• Pyridones

Topics

• Analgesics (chemical synthesis, chemistry, therapeutic use)
• Animals
• Dose-Response Relationship, Drug
• Hyperalgesia (drug therapy)
• Molecular Structure
• Pain Measurement
• Pyridones (chemical synthesis, chemistry, therapeutic use)
• Rats
• Structure-Activity Relationship