Acetic Anhydride → 3'-Acetylamino-5'-O-trityl-2',3'-dideoxyuridine

反応式

[NH2:1][C@@H:2]1[C@@H:6]([CH2:7][O:8][C:9]([C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[O:5][C@@H:4]([N:28]2[CH:35]=[CH:34][C:32](=[O:33])[NH:31][C:29]2=[O:30])[CH2:3]1.[C:36](OC(=O)C)(=[O:38])[CH3:37].C(N(CC)CC)C>C(Cl)Cl>[C:36]([NH:1][C@@H:2]1[C@@H:6]([CH2:7][O:8][C:9]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)([C:22]2[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=2)[C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)[O:5][C@@H:4]([N:28]2[CH:35]=[CH:34][C:32](=[O:33])[NH:31][C:29]2=[O:30])[CH2:3]1)(=[O:38])[CH3:37]

参加物

実験手順

Compound 31 (0.10 g, 0.213 mmol) was suspended in DCM (5 ml), and to this was added acetic anhydride (0.047 g, 0.044 ml, 0.469 mmol) and triethylamine (0.065 ml, 0.469 mmol). The mixture was stirred at room temperature for 3 hours. After this time the solvent was evaporated to give a white solid. The product was purified by column chromatography (MeOH/DCM 2%→6%), and evaporation of the solvent gave the title compound as a white solid (0.103 g, 95%).