(2-amino-4-phenylethynyl-phenyl)-carbamic acid tert-butyl ester 、
tert-butyl 3-(2-cyanopyridin-4-yl)-3-oxopropanoate 以Obtained as a white solid (174 mg)的产率得到{2-[3-(2-cyano-pyridin-4-yl)-3-oxo-propionylamino]-4-phenylethynyl-phenyl}-carbamic acid tert-butyl ester