tert-butyl 3-amino-2’-fluorobiphenyl-4-ylcarbamate 、
6-(3-cyano-thiophen-2-yl)-2,2-dimethyl-[1,3]dioxin-4-one 以Obtained as a light yellow solid (446 mg)的产率得到{3-[3-(3-cyano-thiophen-2-yl)-3-oxo-propionylamino]-2'-fluoro-biphenyl-4-yl}-carbamic acid tert-butyl ester