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Tert-butyl 4-(1-(3-nitropyridin-2-yl)piperidin-4-yl)-3-oxopiperazine-1-carboxylate

Tert-butyl 4-(1-(3-aminopyridin-2-yl)piperidin-4-yl)-3-oxopiperazine-1-carboxylate

Methyl 5-nitro-6-(4-(2-oxopiperidin-1-yl)piperidin-1-yl)pyridine-3-carboxylate

Methyl 5-amino-6-(4-(2-oxopiperidin-1-yl)piperidin-1-yl)pyridine-3-carboxylate

Methyl 6-(4-cyclohexylpiperazin-1-yl)-5-nitropyridine-3-carboxylate

Methyl 5-amino-6-(4-cyclohexylpiperazin-1-yl)pyridine-3-carboxylate

Tert-butyl 1-(2-amino-4-cyanophenyl)piperidin-4-ylcarbamate

Tert-butyl 1-(4-(methoxycarbonyl)-2-nitrophenyl)piperidin-4-ylcarbamate

Tert-butyl 1-(4-(methoxycarbonyl)-2-aminophenyl)piperidin-4-ylcarbamate

1-[1-(3-Nitro-2-pyridinyl)-4-piperidinyl]-2(1h)-pyridinone