(2-氨基-4-氟苯基)-氨基甲酸-1,1-二甲基乙酯 、
3-[3-(2-methyl-pyridin-4-yl)-phenyl]-3-oxo-propionic acid tert-butyl ester 以Obtained as an off-white foam (390 mg, 84%)的产率得到(4-fluoro-2-{3-[3-(2-methyl-pyridin-4-yl)-phenyl]-3-oxo-propionylamino}-phenyl)-carbamic acid tert-butyl ester