Synthesis, Characterization of New Isatin-Ibuprofen Derivatives with Expected Biological Activity

Abstract

Ibuprofen is one of the most important members of NSAIDs, named aryl propionic acid derivative. Isatin (1H-indole-2,3-dione) is an important molecule of heterocyclic compounds that have many biological activities. This work illustrates the synthesis of new ibuprofen-isatin derivatives by connecting ibuprofen hydrazide with different isatin derivatives by a condensation reaction, followed by characterization by fourier-transform infrared spectroscopy (FTIR) and proton nuclear magnetic resonance (1H-NMR) spectroscopy. The anti-inflammatory activity was evaluated by using the egg-white induce edema method for all the synthesized compounds (5-8), the compounds 5 and 6 showed better anti-inflammatory activity than ibuprofen as a standard compound. Their antimicrobial activity was evaluated and compared with ciprofloxacin, ampicillin, and fluconazole; the compounds 5 and 7 have moderate antibacterial activity against gram-positive and gram-negative bacteria, with lower antifungal activity.