diethyl 2-acetamido-2-(2-oxopropyl)propanedioate

diethyl 2-acetamido-2-[(4-chlorophenyl)methyl]propanedioate

2-乙酰基氨基-2-吡啶-4-甲基-丙二酸二乙酯

diethyl 2-acetamido-2-(6-octyl-1-oxo-3,4-dihydro-2H-naphthalen-2-yl)propanedioate

diethyl 2-acetamido-2-(1H-indol-3-ylmethyl)propanedioate