3-[2-(4-Amino-2-fluoro-phenyl)-2-oxo-ethyl]-5,5-diphenyl-imidazolidine-2,4-dione 、
二甲基异唑四异氰酸酯 以to yield 1-(3,5-Dimethyl-isoxazol-4-yl)-3-{4-[2-(2,5-dioxo-4,4-diphenyl-imidazolidin-1-yl)-acetyl]-3-flouro-phenyl}-urea的产率得到1-(3,5-Dimethyl-isoxazol-4-yl)-3-{4-[2-(2,5-dioxo-4,4-diphenyl-imidazolidin-1-yl)-acetyl]-3-fluoro-phenyl}-urea