Abstract
Novel oxino bis-pyrazoles were obtained by two step reactions of 3-methyl-1-phenyl pyrazoline-5-one, cyanoacetamide and aryl- or alkylaldehydes, in the presence of catalytic amounts of triethylamine and ethanol as a solvent. All the synthesized compounds were evaluated for their inhibitory activities against butyrylcholinesterase (BChE) and bovine a-chymotrypsin. Two compounds, 8 and 9 were found to be good inhibitors of enzyme BChE with IC50 values of 52.74 ± 0.006 and 51.85 ± 0.005 μM, respectively.
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