Synthesis, characterization, stereochemistry and biological investigation of certain N-dichloroacetyl-bis(2-chlorophenyl)piperidin-4-ones

Add time:07/13/2019    Source:sciencedirect.com

A new series of N-dichloroacetyl-bis(2-chlorophenyl)piperidin-4-ones 4-6 has been synthesized and characterized using IR, 1H, 13C, DEPT and 2D (COSY and HSQC) NMR spectral techniques. The NMR spectral data indicate that the N-acylpiperidin-4-ones 4-6 prefer to exist in an equilibrium between the twist boat conformations with coplanar orientation of NCO moiety. Furthermore, the antibacterial and antifungal studies have been carried out for compounds 1-6 and the results show that they possess significant activity towards the bacterial organisms Staphylococcus aureus and Salmoneela paratyphi and better activity against the remaining bacterial organisms. All the compounds 1-6 possess moderate antifungal activity. The compounds 4-6 have been docked with the structure of MRSA and the results demonstrate that the compounds 4-6 have similar docking score and glide energy when compared to each other and thus having equal binding affinity. The antioxidant studies show greater activity for compound 4 and poor activity for compounds 5 & 6 when compared to the standard drug.

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