Sulfonamide‐β‐lactam Hybrids Incorporating the Piperazine Moiety as Potential Antiinflammatory Agent with Promising Antibacterial Activity

Abstract Several monocyclic β ‐lactams have been synthesized via a [2+2] ketene–imine cycloaddition reaction (Staudinger reaction) and evaluated for their biological activities. The structure of synthesized products was confirmed by spectral data and elemental analyses. β ‐Lactams 4 b and 4 h exhibited 31 and 27 anti‐inflammatory ratios, respectively, which are as well as the well‐known dexamethasone corticosteroid with a 32 anti‐inflammatory ratio. The two most active compounds 4 b and 4 h showed IC 50 values more than 200 μM against the HepG2 cell line, in comparison with doxorubicin (IC 50 <1 μM), indicated biocompatibility and nontoxic behavior. 4 d , 4 j , 4 k , and 4 l , were active against S. aureus and E. coli and had broad spectrum property. The tested compounds were subjected to in silico prediction of pharmacokinetics properties (ADMET) to assess the potential in vivo effectiveness. The molecular docking study confirmed that the active inhibitors 4 b and 4 h are well fitted in the iNOS active site. This data suggests that 4 b and 4 h could potentially serve as effective iNOS inhibitors, a represent promising lead compounds for treating inflammatory disorders.