、
2-(哌啶-1-基)乙酸叔丁酯 、
5-fluoro-N-{5-[(cyclopropylamino)carbonyl]-2-methylphenyl}-2-nitrobenzamide 以to give tert-butyl(4-{3-[({5-[(cyclopropylamino)carbonyl]-2-methylphenyl}amino)carbonyl]-4-nitrophenyl}piperazin-1-yl)acetate的产率得到tert-butyl (4-{3-[({5-[(cyclopropylamino)carbonyl]-2-methylphenyl}amino)carbonyl]-4-nitrophenyl}piperazin-1-yl)acetate