Sodium Iodide → allyl 2-acetamido-3,4-di-O-acetyl-2,6-dideoxy-6-iodo-alpha-D-mannopyranoside
反応式
[C:1]([NH:4][C@H:5]1[C@@H:14]([O:15][C:16](=[O:18])[CH3:17])[C@H:13]([O:19][C:20](=[O:22])[CH3:21])[C@@H:12]([CH2:23]OS(C2C=CC=CC=2C)(=O)=O)[O:11][C@@H:6]1[O:7][CH2:8][CH:9]=[CH2:10])(=[O:3])[CH3:2].[Na+].[I-:36]>>[C:1]([NH:4][C@H:5]1[C@@H:14]([O:15][C:16](=[O:18])[CH3:17])[C@H:13]([O:19][C:20](=[O:22])[CH3:21])[C@@H:12]([CH2:23][I:36])[O:11][C@@H:6]1[O:7][CH2:8][CH:9]=[CH2:10])(=[O:3])[CH3:2]参加物
3
実験手順
A solution of allyl 2-acetamido-3,4-di-O-acetyl-2-deoxy-6-O-tolylsulfonyl-α-D-mannopyranoside, prepared as described above, (3.68 g, 7.37 mmol) and NaI (2.21 g, 14.7 mmol) was gently refluxed for 10 hours, and cooled. The mixture was concentrated, and the residue was chromatographed on silica gel, with toluene-EtOAc (1:2), to give allyl 2-acetamido-3,4-di-O-acetyl-2,6-dideoxy-6-iodo-α-D-mannopyranoside (2.96 g, 88 percent);
後処理
- temperature