2-[(3-甲氧基苯基氨基)-亚甲基]丙二酸二乙酯

diethyl 2-[(2-pyrrol-1-ylanilino)methylidene]propanedioate

diethyl 2-[(thiophen-2-ylamino)methylidene]propanedioate

乙基4-氯噻吩并[2,3-b]吡啶-5-羧酸酯

7-羟基香豆素-3-羧酸乙酯