(2-amino-4-cyclopropyl-phenyl)-carbamic acid tert-butyl ester 、
4-(2,2-dimethyl-6-oxo-6H-[1,3]dioxin-4-yl)-pyridine-2-carbonitrile 以Obtained as a light brown solid (148 mg)的产率得到{2-[3-(2-cyano-pyridin-4-yl)-3-oxo-propionylamino]-4-cyclopropyl-phenyl}-carbamic acid tert-butyl ester