Synthesis and analgesic and anti-inflammatory activity of 6-phenyl/(4-methylphenyl)-3(2H)-pyridazinon-2-propionamide derivatives.

Abstract

For reducing gastrointestinal toxicity associated with non-steroidal anti-inflammatory drugs (NSAIDs) a variety of 6-phenyl/(4-methylphenyl)-3(2H)-pyridazinon-2-propionamide were synthesized. The structures of these new pyridazinone derivatives were confirmed by their IR, 1H-NMR spectra and elementary analysis. All the new compounds were tested in vivo for their analgesic and anti-inflammatory activities. The analgesic activity of the test compounds was determined by phenylbenzoquinone-induced writhing assay and the anti-inflammatory activity was evaluated by the carrageenan-induced rat paw edema model. 6-Phenyl-3(2H)-pyridazinon-2-yl-[4-(4-fluorophenyl)piperazinyl] propanamide IVa-3 was the most active one among the synthesized compounds. Also this compound exhibited most potent anti-inflammatory activity. Acetylsalicylic acid and indometacin were used as reference drugs. Adverse effects of the compounds were examined on gastric mucosa. None of the compounds showed gastric ulcerogenic effect compared with the reference NSAIDs.

• Authors: Mehtap Gökçe, Meral Sirin Colak, Esra Küpeli, Mustafa Fethi Sahin
• Journal: Arzneimittel-Forschung (Arzneimittelforschung) Vol. 59 Issue 7 Pg. 357-63 ( 2009) ISSN: 0004-4172 [Print] Germany
• PMID: 19728563 (Publication Type: Journal Article)

Chemical References

• 6-phenyl-(4-methylphenyl)-3(2H)-pyridazinon-2-propionamide
• Amides
• Analgesics, Non-Narcotic
• Anti-Inflammatory Agents, Non-Steroidal
• Benzoquinones
• Indicators and Reagents
• Pyridazines
• phenylbenzoquinone
• Carrageenan
• Aspirin
• Indomethacin

Topics

• Amides (chemical synthesis, pharmacology)
• Analgesics, Non-Narcotic (adverse effects, chemical synthesis, pharmacology)
• Animals
• Anti-Inflammatory Agents, Non-Steroidal (adverse effects, chemical synthesis, pharmacology)
• Aspirin (adverse effects, pharmacology)
• Benzoquinones
• Carrageenan
• Edema (chemically induced, pathology)
• Foot (pathology)
• Gastric Mucosa (pathology)
• Indicators and Reagents
• Indomethacin (adverse effects, pharmacology)
• Magnetic Resonance Spectroscopy
• Male
• Mice
• Pain Measurement (drug effects)
• Pyridazines (chemical synthesis, pharmacology)
• Spectrophotometry, Infrared
• Stomach Ulcer (chemically induced, pathology)