反应详情

温度

45 °C

To a solution of (5S)-((3R,3aR,6R,6aR)-6-(tetrahydro-2H-pyran-2-yloxy)-hexahydrofuro[3,2-b]furan-3-yl)5,6-bis(nitrooxy)hexanoate (2.27 g, 5.04 mmol) in ethanol (40 mL) pyridinium p-toluensulfonate (127 mg, 0.504 mmol) was added The reaction mixture was stirred at 45° C. for 4 hrs. The reaction mixture was filtered, concentrated under reduced pressure. The crude residue was purified by flash chromatography (Biotage SP1, EtOAc/n-hexane from 10 to 60%), affording the title product as pale yellow oil. 1H-NMR (300 MHz, CDCl3); δ 5.30 (1H, dd), 5.16 (1H, q), 4.77 (1H, d), 4.71 (1H, t), 4.50 (2H, m), 4.26 (1H, m), 4.12 (1H, dd), 3.94 (1H, dd), 3.85 (1H, dd), 3.58 (1H, dd), 2.61 (1H, d), 2.47 (2H, m), 1.83 (4H, m).

1. filtrationThe reaction mixture was filtered
2. concentrationconcentrated under reduced pressure
3. customThe crude residue was purified by flash chromatography (Biotage SP1, EtOAc/n-hexane from 10 to 60%)