反应详情

To a solution of fluvastatin (100 mg, 0.25 mmol, in the lactone form) in THF (1 mL) was added 50% hydroxylamine in H2O (0.12 mL, 1.91 mmol). The mixture was stirred at ambient temperature for 16 h, and concentrated under reduced pressure. The residue was extracted with CH2Cl2. The organic layer was washed with brine, dried over MgSO4, filtered, concentrated, and purified by flash chromatography (silica gel; CH2Cl2/MeOH/NEt3 (89:1:9 to 5:5:1)) to give fluva-HA (30 mg, 30%). C24H27FN2O4; white foam; TLC (CH2C1-2/MeOH (9:1)) Rf=0.13; 1H NMR (CDCl3, 400 MHz) δ 7.57-7.59 (1H, d, J=8.4 Hz), 7.41-7.44 (3H, m), 7.13-7.19 (3H, m), 6.99-7.03 (1H, t), 6.69-6.73 (1H, d, J=14.8 Hz), 5.74-5.79 (1H, dd, J=16.4 Hz), 4.95 (1H, br s), 4.39-4.42 (1H, m), 4.21-4.24 (1H, m), 2.24-2.25 (2H, m), 1.64-1.73 (6H, m), 1.32-1.36 (2H, m) ppm; ESI-HRMS calcd for C24H28FN2O4: 427.2033. found: m/z 427.2034 [M+H]+.

1. concentrationconcentrated under reduced pressure
2. extractionThe residue was extracted with CH2Cl2
3. washThe organic layer was washed with brine
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated
7. custompurified by flash chromatography (silica gel; CH2Cl2/MeOH/NEt3 (89:1:9 to 5:5:1))
8. customto give fluva-HA (30 mg, 30%)