Dimethyl 4-(4-bromophenyl)-2,6-dimethyl-1,4-dihydro-3,5-pyridined icarboxylate

甲基2,5-二甲基-4-苯基-1H-吡咯-3-羧酸酯

dimethyl 4-(furan-2-yl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate

4,7-dimethyl-6H-pyrano[3,2-c]pyridine-2,5-dione

methyl 2-methyl-4-(3-nitrophenyl)-5-oxo-7H-furo[3,4-b]pyridine-3-carboxylate