4-chloro-6-(5-chloro-2-methylphenyl)pyrimidin-2-amine 、 3-[4-(4-Amino-phenyl)-oxazol-2-yl]-propionic acid methyl ester 以provided 3-(4-{4-[2-amino-6-(5-chloro-2-methyl-phenyl)-pyrimidin-4-ylamino]-phenyl}-oxazol-2-yl)-propionic acid methyl ester的产率得到3-(4-{4-[2-amino-6-(5-chloro-2-methyl-phenyl)-pyrimidin-4-ylamino]-phenyl}-oxazol-2-yl)-propionic acid methyl ester