Synthesis, Characterization, Anti-Mycobacterial Evaluation and In-Silico Molecular Docking of Novel Isoxazole Clubbed Pyrimidine Derivatives
Nagaraju Pappula
Department of Pharmaceutical Analysis, Hindu College of Pharmacy, Amaravati Road, Guntur-522 002, Andhra Pradesh, India.
Ravichandra Sharabu *
Acharya Nagarjuna University, Guntur-522 002, Andhra Pradesh, India.
*Author to whom correspondence should be addressed.
Abstract
In the present research, we tend to ready a series of novel pyrimidine-linked isoxazole derivatives (11-20). The molecular structure and the elemental composition of these compounds were confirmed by spectroscopic studies and elemental analysis. MABA (Microplate alamar Blue Assay) assay was employed for assessing the antitubercular activity against the Mycobacterium tuberculosis H37Rv strain. Among the ten synthesized compounds, 18 and 20 showed excellent anti-tubercular activity than the reference (MIC-3.125 µg/ml) at 0.78 µg/mL. The compounds were found to possess good binding affinity than a standard against thymidylate kinase enzyme (PDB-1MRS) as evidenced by the molecular docking studies. Additionally, the bioactivity was conducted by Mol-inspiration software tool and the drug-likeness property was evaluated on Lipinski's rule of five by SCFBio online software. The lead compounds identified through these studies could be useful for the furtherance of the drug discovery process in the area of antitubercular research.
Keywords: Tuberculosis, MABA assay, pyrimidine, pyrazinamide and thymidylate kinase