In Silico Prediction, Molecular Docking Study for Identification of Novel Nitrogen Substituted Benzoxazole Derivative for Their Potential Biological Activity
摘要
Drug discovery uses in silico biological activity prediction as a tool since it helps prioritise which molecules to test in vivo or in vitro. The in silico prioritization of new-fangled benzoxazole derivatives for their possible therapeutic action against CNS disorders is reported in this study.
Materials and MethodsMolecular docking simulations were performed on the GABA_Diazepam site (PDB ID: 6 × 3X) using Glide XP (Schrödinger 2020-4). Ligand structures, designed with ChemDraw, underwent in silico analysis by QikProp (Schrödinger 2020-4) was used for physicochemical property predictions.
Results and DiscussionThe study examined nitrogen-substituted benzoxazole derivatives for potential use in CNS disorders by assessing their binding affinities, pharmacokinetics, and toxicity. Docking scores (MMGBSA) ranged from − 34.30 to -56.22 kcal/mol, by way of compound 3 having the highest likeness (-56.22 kcal/mol), while diazepam, the reference drug, showed the strongest binding (-68.77 kcal/mol). Key connections with vital amino acids like MET286, PHE289, VAL290, and ASN265 helped stabilize the compounds in the binding site. This is also shown by Diazepam Pharmacokinetic properties predicted by QikProp indicated that most compounds followed Lipinski’s rule of 5, signifying they include good drug-like characteristics. They also showed acceptable solubility and brain/blood partitioning, indicating potential for CNS targeting. Toxicity predictions showed no significant risk of cardiotoxicity through HERG channel inhibition. Overall, these derivatives appear to be promising candidates for further study as potential CNS drugs.
Conclusion and Future PerspectiveThe nitrogen-substituted benzoxazole compounds under investigation demonstrate significant potential as CNS-active drugs, as indicated by favorable toxicity profiles, ADME properties, and molecular docking results. To build on these results, focused in vitro and in vivo studies are essential. Radioligand binding assays can validate binding affinity to the GABA receptor and assess receptor occupancy at therapeutically relevant doses. Additionally, pharmacodynamic evaluations using behavioral models, such as the elevated plus maze and rotarod test, can elucidate their sedative, anxiolytic, and anticonvulsant effects. These steps will provide critical insights into their therapeutic efficacy and support further development for CNS-related disorders.