[The reaction of 3-(R-phenyl)-6-hydrazine pyridazines with substituted isatins (II)]

Area of Science:

• Medicinal Chemistry
• Organic Synthesis
• Coordination Chemistry

Context:

• Isatin derivatives are explored for their diverse biological activities.
• Hydrazones and their metal complexes are investigated for pharmacological applications.
• Copper complexes are of interest due to their potential therapeutic properties.

Purpose:

• To synthesize and characterize novel hydrazone derivatives and their copper complex salts.
• To evaluate the biological activities, including anti-inflammatory and gastroprotective effects, of these synthesized compounds.
• To determine the structure-activity relationships of the synthesized copper complex salts.

Summary:

• Six hydrazones derived from isatin and 1-morpholinomethyl-isatin, along with their six copper complex salts, were successfully synthesized.
• Structural confirmation was achieved through elemental analysis and spectroscopic methods (IR, UV-VIS).
• Biological evaluations revealed that copper complex salt VI a (3-(3'-phenyl-pyridazinylhydrazono)-5-methyl-indoline-2-one (1:2)) exhibits low toxicity, notable anti-inflammatory activity (57.1% inhibition), and a gastroprotective coefficient of 43.3%.

Impact:

• Compound VI a shows promising therapeutic potential as an anti-inflammatory and gastroprotective agent.
• Compound VI b (3-(3'-p-anisyl-pyridazinyl-hydrazono)-5-methyl-indoline-2-one (1:2)) demonstrates superior gastroprotection (76.3%) despite lower anti-inflammatory activity.
• This research contributes novel compounds with potential applications in drug discovery for inflammatory and gastrointestinal disorders.