DESIGN, DOCKING AND SYNTHESIS OF NOVEL BROMO ISATIN INCORPORATED ISOXAZOLE DERIVATIVES AS VEGFR-2 INHIBITORS
DOI:
https://doi.org/10.22159/ijpps.2019v11i4.31933Keywords:
BromoIsatin, Isoxazole hydrazides, Molecular Docking, VEGFR-2 Kinase enzyme assay, invitro antiproliferative assay, ADMET studyAbstract
Objective: To design, synthesize, in vitro Vascular Endothelial Growth Factor Receptor (VEGFR-2) assay, antiproliferative activity an Absorption, Distribution, Metabolism, Excretion and Toxicity (ADMET) studies of some novel bromoisatin incorporated isoxazole derivatives.
Methods: Designed compounds were synthesized by the condensation of different 3-aryl-5-methylisoxazole-4-carbohydrazides (5a-h) with 5-bromoisatin to give the target molecules. To predict the affinity and activity of the ligand molecule the docking program GOLD 3.1 was employed to generate different bioactive binding poses of designing molecules at the active site of protein VEGFR-2. All the synthesized compounds were characterized based on the spectral and elemental analysis data. Antiproliferative activity performed against Human Umbilical vein endothelial cells (HUVEC cell line).
Results: All the synthesized compounds showed the characteristic peaks in FTIR,1H, C[13]NMR and Mass spectral analysis. In molecular docking, all the synthesized compounds (6a-j) exhibited high fitness scores with minimum three bonding interaction with the active site VEGFR-2 kinase. In in-vitro, VEGFR-2 kinase assay, compounds 6a, 6b, 6d and 6e exhibited more than 70% inhibition at a single dose concentration of 5μM. In antiproliferative assay against HUVEC cell lines, compounds 6d and 6e exhibited potent activity with IC50 values in nanomolar concentrations. ADMET results of 6a, 6b, 6d and 6e are quite promising with least hepatotoxicity and good bioavailability.
Conclusion: The derivatives were synthesized in quantitative yields. New derivatives posses antiproliferative activity, least hepatotoxicity and good bioavailability.
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