1-(4-acetyl-4-phenylpiperidin-1-yl)-2-phenyl-2-(4-sulfanylidene-1H-pyrazolo[4,3-c]pyridin-5-yl)ethanone;5-[2-[4-(4-methoxyphenyl)piperazin-1-yl]-1-phenylprop-2-enyl]-1H-pyrazolo[4,3-c]pyridine-4-thione;5-[1-phenyl-2-(4-phenylpiperazin-1-yl)prop-2-enyl]-1H-pyrazolo[4,3-c]pyridine-4-thione;5-[1-phenyl-2-(4-pyridin-2-ylpiperazin-1-yl)prop-2-enyl]-1H-pyrazolo[4,3-c]pyridine-4-thione