dimethyl 4-(4-amino-3-nitrophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

4-(3,4-diaminophenyl)-2,6-dimethyl-3,5-bis(methoxycarbonyl)-1,4-dihydropyridine

dimethyl 4-[2-(methoxycarbonylamino)-3H-benzimidazol-5-yl]-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

dimethyl 4-[(2E)-3-[(4-hydroxy-3-methoxyphenyl)methyl]-2-(3-methoxy-4-oxocyclohexa-2,5-dien-1-ylidene)-1H-benzimidazol-5-yl]-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate