(2-amino-4-phenylethynyl-phenyl)-carbamic acid tert-butyl ester 、
2,2-Dimethyl-6-(3-nitro-phenyl)-[1,3]dioxin-4-one 以Obtained as a light yellow solid (989 mg)的产率得到{2-[3-(3-nitro-phenyl)-3-oxo-propionylamino]-4-phenylethynyl-phenyl}-carbamic acid tert-butyl ester