Five synthesized pyrazolopyridine derivatives, such as 4-(2-chloro-6-flurpphenyl)-3-methyl-6- oxo-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine-5-carbonitrile (AP-1), 3-methyl-6-oxo-4,5,6 ,7-tetrahydro-2H-pyrazolo[3,4-b]pyridine-5-carbonitrile (AP-2), 3-methyl-6-oxo-4-(p-tolyl)-4,5,6