[NH2:1][C:2]1([C:13]2[CH:18]=[CH:17][C:16]([CH:19]([CH3:21])[CH3:20])=[CH:15][C:14]=2[O:22][CH3:23])[C:10](=[O:11])[C:9]2[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=2)[C:3]1=[O:12].[C:24](Cl)(=[O:26])[CH3:25].C(N(CC)CC)C>C(Cl)Cl>[CH:19]([C:16]1[CH:17]=[CH:18][C:13]([C:2]2([NH:1][C:24](=[O:26])[CH3:25])[C:10](=[O:11])[C:9]3[C:4](=[CH:5][CH:6]=[CH:7][CH:8]=3)[C:3]2=[O:12])=[C:14]([O:22][CH3:23])[CH:15]=1)([CH3:21])[CH3:20]2-Amino-2-(4-isopropyl-2-methoxyphenyl)-2H-inden-1,3-dione (0.10 g, 0.32 mmol) was dissolved in methylene chloride (4 ml). This solution was added with acetyl chloride (0.05 ml, 0.70 mmol), followed by stirring at room temperature for 15 min, and added with triethylamine (0.12 ml, 0.86 mmol), and stirred for 6 hrs. After the reaction mixture was extracted with methylene chloride (50 ml×3), the organic layer was purified using column chromatography (45% ethylacetate in hexane) to afford the title compound (70 g, 62%).
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