8-(4-Methyl-piperazin-1-yl)-4-oxo-4H-chromene-2-carboxylic acid (5-ethoxy-benzothiazol-2-yl)-amide 、 1-[4-(4-氨基-苯基)-哌嗪-1-基]-丙-1-酮 、
4-(4-吗啉基)苯胺 以to give 45 mg (12%) of the desired product as a yellow solid的产率得到6-Ethoxy-8-(4-methyl-piperazin-1-yl)-4-oxo-4H-chromene-2-carboxylic acid [4-(4-propionyl-piperazin-1-yl)-phenyl]-amide