DESIGN, BINDING AFFINITY STUDIES AND IN SILICO ADMET PREDICTIONS OF NOVEL ISOXAZOLES AS POTENTIAL ANTI-BACTERIAL

Abstract

Objective: The objective of the study is to design novel isoxazole derivatives, predicting their interactions with the selected target proteins and determining the ADMET properties of potent molecules using recent computational methods.
 Methods: With the intent to discover potent novel antibacterial, we have designed a set of compounds containing the isoxazole nucleus by using software tools like Discovery studios, PyRx, PyMOL, SWISSPDB. ADMET studies were carried out by using SWISS ADMET and pkCSM. Molecular docking studies were carried out on the target proteins of both gram-positive and gram negative bacteria in order to assesses binding affinity for the proteins.
 Results: Designed scaffold was designed by Benzene Derivatives Tethered with 5(4-chloro-3-nitro phenyl-1-yl) isoxazole. All the derivatives were docked against the three proteins, namely DNA Ligase (PDB ID: 3PN1), Topoisomerase (PDB ID: 3TTZ), Sterol demethylase (PDB ID: 5FSA), The compound JJC3F has shown best binding score against DNA ligase, sterol demethylase protein. Further, compound JJC3A has shown a better binding affinity towards topoisomerase than the standard drugs.
 Conclusion: Molecular Docking study indicates that isoxazole derivatives may be effective inhibitors for the different microbial proteins. Additionally, in silico ADMET studies predicts drug-like features. Hence, these compounds may be considered as leads and further investigation of their analogues may help in development of novel drugs for the treatment of microbial diseases.