Synthesis and in-silico molecular docking simulation of 3-chloro-4-substituted-1-(2-(1H-benzimidazol-2-yl)phenyl))-azetidin-2-ones as novel analgesic anti-inflammatory agent

AbstractIn the present investigation synthesis of some novel 1-(2-(1H-benzimidazol-2-yl)phenyl)-3-chloro-4-(Un/substitutedphenyl)azetidin-2-one (3a–3h) is reported. All these compounds were characterized by IR, Mass, 1H NMR and elemental analysis. The newly synthesized compounds were screened for analgesic and anti-inflammatory activities on acetic acid induced writhing in mice and carrageenan induced paw edema in rats. Compound 3g was found to have potent analgesic (46% at 20mg/kg b.w) and anti-inflammatory (66.5% at 20mg/kg b.w) activities as compared to standard drug nimesulide (20mg/kg b.w). To check binding modes and binding affinity of synthesized compounds were docked into the active sites of enzyme COX-II. Compounds 3a, 3e and 3h were found to have good affinity for COX-II. A good correlation is found between in silico docking analysis and in biological screening