dimethyl 10-oxo-2-phenyl-3,10-dihydro-2H-chromeno[3,2-c]pyridine-3,4-dicarboxylate

2-anilino-4-oxochromene-3-carbaldehyde

dimethyl 3-benzoylpyrrolo[2,1-a]phthalazine-1,2-dicarboxylate

5,6-二羟基-嘧啶-4-羧酸甲酯

1,2,5-Triphenylpyrrol-3,4-dicarbonsaeure-dimethylester