2-{[4-(3-{2-[2-(3,4-Dimethoxy-phenyl)-ethylcarbamoyl]-ethyl}-2,6-dioxo-piperidin-3-yl)-phenylamino]-methylene}-malonic acid diethyl ester 以
二苯醚 为溶剂,
以66%的产率得到6-(3-{2-[2-(3,4-Dimethoxy-phenyl)-ethylcarbamoyl]-ethyl}-2,6-dioxo-piperidin-3-yl)-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid ethyl ester