[NH2:1][C:2]1[CH:10]=[C:9]2[C:5]([C:6]([C:21]([NH:23][CH2:24][C:25]3[CH:30]=[CH:29][C:28]([F:31])=[C:27]([F:32])[CH:26]=3)=[O:22])=[C:7]([CH:18]([CH3:20])[CH3:19])[N:8]2[CH2:11][C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)=[CH:4][CH:3]=1.[CH:33]([C:36](Cl)=[O:37])([CH3:35])[CH3:34]>C(Cl)Cl.CN(C1C=CN=CC=1)C.CCOC(C)=O>[CH2:11]([N:8]1[C:9]2[C:5](=[CH:4][CH:3]=[C:2]([NH:1][C:36](=[O:37])[CH:33]([CH3:35])[CH3:34])[CH:10]=2)[C:6]([C:21]([NH:23][CH2:24][C:25]2[CH:30]=[CH:29][C:28]([F:31])=[C:27]([F:32])[CH:26]=2)=[O:22])=[C:7]1[CH:18]([CH3:19])[CH3:20])[C:12]1[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=1To a solution of 6-amino-1-benzyl-N-(3,4-difluorobenzyl)-2-isopropyl-1H-indole-3-carboxamide (Compound 125, 18 mg, 0.042 mmol) in CH2Cl2 (1 ml) was added i-PrCOCl (8.7 μl, 0.089 mmol) and DMAP (10 mg, 0.089 mmol). The reaction was stirred at room temperature for 2 h, diluted with EtOAc, washed with aqueous Na2CO3 and brine, dried over Na2SO4, and concentrated in vacuo. The residue was purified by chromatography on silica gel (0→50% EtOAc-hexanes) to yield the title compound.
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