2-oxo-N-(4-sulfamoylphenyl)chromene-3-carboxamide

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

3-(1H-benzimidazol-2-yl)chromen-2-one