3-[2-(4-Amino-phenyl)-2-oxo-ethyl]-5-phenyl-5-propyl-imidazolidine-2,4-dione 、
(3,5-dimethyl-isoxazol-4-yl)-acetic acid chloride 以to yield (±)-2-(3,5-dimethyl-isoxazol-4-yl)-N-{4-[2-(2,5-dioxo-4-phenyl-4-propyl-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-phenyl-4-propyl-imidazolidin-1-yl)-acetyl]-phenyl}-acetamide