反应详情

To a stirred solution of crude N-{(1S,2R)-2-[4-(6-Aminomethyl-pyridin-3-yl)-phenyl]-1-fluoromethyl-2-hydroxy-ethyl}-2,2-dichloro-acetamide (30 mg, 0.077 mmol) in CH2Cl2 (2 mL) is added triethyl amine (8 mg, 0.078 mmol) and acetic anhydride (20 mg, 0.198) and the reaction mixture was stirred at room temperature for 6 h. Diluted with water and extracted with CH2Cl2 dried over sodium sulphate and solvent is evaporated in vacuo to give crude, which is purified by silica gel prep TLC using the mobile phase 10% methanol in CH2Cl2 to afford title compound (5 mg): 1H-NMR (400 MHz, DMSO-d6) 6: (s, 3H), 4.30-4.34 (m, 1H), 4.45 (d, J=5.96 Hz, 2H), 4.48-4.51 (m, 1H), 4.55-4.58 (m, 1H), 5.00 (d, 1H), 5.95 (d, 1H), 6.12 (s, 1H), 6.99 (bs, 1H), 7.34-7.36 (m, 1H), 7.47-7.50 (m, 2H), 7.62-7.67 (m, 2H), 7.96 (dd, J1=8.2 Hz, J2=2.4 Hz, 1H), 8.76 (d, J=2.2 Hz, 1H). LC-Ms (m/z): [M+H]=428.10.

1. extractionextracted with CH2Cl2
2. dry with materialdried over sodium sulphate and solvent
3. customis evaporated in vacuo
4. customto give crude, which
5. customis purified by silica gel prep TLC