3-[2-(4-amino-phenyl)-2-oxo-ethyl]-5,5-diphenyl-imidazolidine-2,4-dione 、
(3,5-二甲基异恶唑-4-基)乙酸 以to yield 2-(3,5-dimethyl-isoxazol-4-yl)-N-{4-[2-(2,5-dioxo-4,4diphenyl-imidazolidin-1-yl)-acetyl]-phenyl}-acetamide的产率得到2-(3,5-dimethyl-isoxazol-4-yl)-N-{4-[2-(2,5-dioxo-4,4-diphenyl-imidazolidin-1-yl)-acetyl]-phenyl}-acetamide