Potassium Carbonate → HCID 178521054、化合物
反応式
C([O:4][C@@H:5]1[C@@H:13]([CH2:14][O:15]C(=O)C)[O:12][CH:11]2[CH:7]([N:8]=[C:9]([NH:19][CH2:20][C:21]([F:24])([F:23])[F:22])[S:10]2)[C@H:6]1[O:25]C(=O)C)(=O)C.C([O-])([O-])=O.[K+].[K+]>CO>[OH:15][CH2:14][C@H:13]1[O:12][CH:11]2[CH:7]([N:8]=[C:9]([NH:19][CH2:20][C:21]([F:24])([F:22])[F:23])[S:10]2)[C@@H:6]([OH:25])[C@@H:5]1[OH:4]参加物
4
実験手順
(5R,6S,7R)-5-(acetoxymethyl)-2-(2,2,2-trifluoroethylamino)-5,6,7,7a-tetrahydro-3aH-pyrano[3,2-d]thiazole-6,7-diyl diacetate (0.328 g, 0.776 mmol) was dissolved in anhydrous MeOH. Solid K2CO3 was added to the solution until it was basic, and the reaction was stirred at room temperature (1 h). The reaction was filtered and then concentrated in vacuo. The final reaction mixture was purified via flash column chromatography with a solvent system of 5:1 DCM and MeOH, providing (5R,6S,7R)-5-(hydroxymethyl)-2-(2,2,2-trifluoroethylamino)-5,6,7,7a-tetrahydro-3aH-pyrano[3,2-d]thiazole-6,7-diol (39) (0.110 g, 47% yield). 1H NMR (500 MHz, methanol-d4) δ 3.47-3.50 (m, 1H), 3.61-3.69 (m, 2H), 3.81 (d, 1H, J=11.8 Hz), 3.92 (m, 3H), 4.03 (s, 1H), 4.10 (q, 1H, J=6.9 Hz), 6.35 (d, 1H, J=6.0 Hz). 13C NMR (125 MHz, methanol-d4) δ 61.94, 69.79, 74.31, 75.35, 123.82, 126.04, 175.25, 225.56.