Design, Synthesis, Molecular Docking and Biological Activity of Pyrazolopyridines as Promising Lead Candidates Against Mycobacterium tuberculosis
H, S. P. R.; R, G.; Adigopula, L. N.; Muthukumaran, J.
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Pyrazolo[3,4-b]pyridine is a medicinally privileged structure. We have achieved a new and facile synthesis of a combinatorial library of its tetra- and persubstituted derivatives by trifluoracetic acid catalysed condensation of a group of 5-aminopyrazoles and a group of -oxoketene dithioacetals. Furthermore, we demonstrated structural modification of the products via reductive desulfurization, hydrolysis of the ester and Suzuki coupling of the bromo derivative with aryl bornoic acids. Some of the products were subjected to in vitro MABA assay against M. tuberclulosis H37Rv strain and in silico analysis by binding to pantothenate synthetase from M. tuberclulosis (MTBPS). The results indicated that the pyazolo[3,4-b]pyridine with N(1)CH3, C(3)C6H5, C(4) pCH3C6H5, C(5)CO2Et, C(6)SMe substitutions exhibits promising antituberculotic activity.
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