[CH:1]([CH:4]1[NH:8][C:7](=[O:9])[NH:6][C:5]1=[O:10])([CH3:3])[CH3:2].[CH3:11][O:12][C:13]1[CH:20]=[CH:19][C:16]([CH2:17]Cl)=[CH:15][CH:14]=1>>[CH:1]([CH:4]1[NH:8][C:7](=[O:9])[N:6]([CH2:17][C:16]2[CH:19]=[CH:20][C:13]([O:12][CH3:11])=[CH:14][CH:15]=2)[C:5]1=[O:10])([CH3:3])[CH3:2]Using 5-isopropylimidazolidine-2,4-dione (2.00 g) and 4-methoxybenzyl chloride (2.29 mL) and by the reaction and treatment in the same manner as in Preparation Example 51, the title compound (2.72 g) was obtained.
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