[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C@@H:8]([O:11][Si:12]([CH2:17][CH3:18])([CH2:15][CH3:16])[CH2:13][CH3:14])[CH2:9]I)=[CH:4][C:3]=1[NH:19][S:20]([CH3:23])(=[O:22])=[O:21].[CH2:24]([NH:31][CH2:32][CH2:33][OH:34])[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1.C1(C)C=CC=CC=1>CCOCC>[CH2:24]([N:31]([CH2:32][CH2:33][OH:34])[CH2:9][C@@H:8]([C:5]1[CH:6]=[CH:7][C:2]([Cl:1])=[C:3]([NH:19][S:20]([CH3:23])(=[O:22])=[O:21])[CH:4]=1)[O:11][Si:12]([CH2:17][CH3:18])([CH2:15][CH3:16])[CH2:13][CH3:14])[C:25]1[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=1(R)—N-(2-Chloro-5-(2-iodo-1-(triethylsilyloxy)ethyl)phenyl)methanesulfonamide (3 g) and 2-(benzylamino)ethanol (6 mL; Tokyo Chemical Industry, Co., Ltd.) were admixed with each other and stirred overnight at 100° C. The reaction solution was cooled to room temperature, added with toluene and Et2O, and then washed with water three times. The organic layer was dried over magnesium sulfate and the solvent was evaporated under reduced pressure. The residue was purified by column chromatography (“COLUMN-B”; n-hexane:ethyl acetate=84:16→64:36) to obtain the title compound (2.1894 g).
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