[Cl:1][C:2]1[C:20]([NH:21][C:22](=[O:29])[CH2:23][CH2:24][C:25]([O:27][CH3:28])=[O:26])=[CH:19][CH:18]=[C:17]([Cl:30])[C:3]=1[CH2:4][O:5][C:6]1[CH:7]=[CH:8][CH:9]=[C:10]2[C:15]=1[N:14]=[C:13]([CH3:16])[CH:12]=[CH:11]2.IC.[CH3:33]N(C)C=O.[H-].[Na+]>C(OCC)(=O)C>[Cl:1][C:2]1[C:20]([N:21]([C:22](=[O:29])[CH2:23][CH2:24][C:25]([O:27][CH3:28])=[O:26])[CH3:33])=[CH:19][CH:18]=[C:17]([Cl:30])[C:3]=1[CH2:4][O:5][C:6]1[CH:7]=[CH:8][CH:9]=[C:10]2[C:15]=1[N:14]=[C:13]([CH3:16])[CH:12]=[CH:11]2To a mixture of 8-[2,6-dichloro-3-(3-methoxycarbonylpropionylamino)benzyloxy]-2-methylquinoline (447 mg), iodomethane (0.1 ml) and dimethylformamide (5.0 ml) was added sodium hydride (60% in oil, 44 mg) under ice-water cooling. After stirring for 2 hours at the same temperature, the reaction mixture was diluted with ethyl acetate and washed with water twice. The organic layer was dried over magnesium sulfate and evaporated in vacuo. The residue was purified by a column chromatography eluted with chloroform to give 8-[2,6-dichloro-3-[N-(3-methyoxycarbonylpropionyl)-N-methylamino]benzyloxy]-2-methylquinoline (310 mg) as a pale yellow oil.
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