diethyl 2-(chloromethyl)-6-methyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate

Ethyl 4-(3,4-dihydro-2-oxo-2H-benzopyran-4-yl)-3-iminobutanoate

Ethyl 2-amino-4-(2-hydroxyphenyl)-6-oxo-1-cyclohexene-1-carboxylate

ethyl 2-[4-(2-hydroxyphenyl)-6-oxopiperidin-2-ylidene]acetate

2,4-二甲基吡啶-3-甲酸乙酯