Abstract
Abstract Syntheses of N1-hydrogen and N1-benzoyl pyrazoline derivatives and their antibacterial in vitro and in silico assays have been carried out. N1-Hydrogen pyrazoline derivatives were synthesized by cyclization of 2’-hydroxy chalcone, and the subsequent substitution reaction produced N1-benzoyl pyrazoline derivatives. The in vitro antibacterial assay was carried out by disc diffusion method. In silico evaluation was performed via molecular docking against ecKAS III enzyme (ID PDB: 1hnj) and ADMET prediction was carried out using pkCSM tool. The synthesis results showed that N1-hydrogen and N1-benzoyl pyrazoline derivatives were yielded in 50-83%. Antibacterial test results indicated that the presence of N1-benzoyl substituent decreased the antibacterial activity and was only active on Gram-positive bacteria. In comparison, the N1-hydrogen pyrazolines exhibited good antibacterial activity against both Gram-positive and negative bacteria. The ADMET result confirms that compound 2 has the potential to be evolved as a drug in the future. Keywords: Pyrazoline, Antibacterial, Molecular Docking, ADMET
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