Synthesis and urease inhibitory potential of benzophenone sulfonamide hybrid in vitro and in silico.

This study deals with the synthesis of benzophenone sulfonamides hybrids (1-31) and screening against urease enzyme in vitro. Studies showed that several synthetic compounds were found to have good urease enzyme inhibitory activity. Compounds 1 (N'-((4'-hydroxyphenyl)(phenyl)methylene)-4''-nitrobenzenesulfonohydrazide), 2 (N'-((4'-hydroxyphenyl)(phenyl)methylene)-3''-nitrobenzenesulfonohydrazide), 3 (N'-((4'-hydroxyphenyl)(phenyl)methylene)-4''-methoxybenzenesulfonohydrazide), 4 (3'',5''-dichloro-2''-hydroxy-N'-((4'-hydroxyphenyl)(phenyl)methylene)benzenesulfonohydrazide), 6 (2'',4''-dichloro-N'-((4'-hydroxyphenyl)(phenyl)methylene)benzenesulfonohydrazide), 8 (5-(dimethylamino)-N'-((4-hydroxyphenyl)(phenyl)methylene)naphthalene-1-sulfono hydrazide), 10 (2''-chloro-N'-((4'-hydroxyphenyl)(phenyl)methylene)benzenesulfonohydrazide), 12 (N'-((4'-hydroxyphenyl)(phenyl)methylene)benzenesulfonohydrazide) have found to be potently active having an IC50 value in the range of 3.90-17.99 µM. These compounds showed superior activity than standard acetohydroxamic acid (IC50 = 29.20 ± 1.01 µM). Moreover, in silico studies on most active compounds were also performed to understand the binding interaction of most active compounds with active sites of urease enzyme. Structures of all the synthetic compounds were elucidated by 1H NMR, 13C NMR, EI-MS and FAB-MS spectroscopic techniques.