反应详情

温度

60 °C

A 4 mL vial was charged with a stir bar, a solution of Example 138a (30 mg, 0.063 mmol) in tetrahydrofuran (1 mL), a solution of cyclobutanol (32 mg, 7 equivalents, 0.46 mmol) in tetrahydrofuran (1 mL) and neat sodium hydride (19 mg, 7 equivalents, 0.46 mmol). The reaction mixture was stirred at 60° C. for 16 hours. The crude material was filtered, concentrated, and purified by reverse phase HPLC (C18, 10-100% CH3CN/water (0.1% TFA)) to afford the title compound. 1H NMR (400 MHz, DMSO-d6/D2O) δ ppm 7.98-7.75 (m, 2H), 7.33 (d, J=1.4 Hz, 2H), 7.16 (d, J=8.7 Hz, 1H), 6.15 (d, J=2.8 Hz, 1H), 4.82 (p, J=7.2 Hz, 1H), 3.59 (s, 3H), 3.19 (d, J=8.5 Hz, 3H), 2.47-2.38 (m, 2H), 1.96 (p, J=9.6 Hz, 2H), 1.81-1.72 (m, 1H), 1.72-1.57 (m, 1H). MS (ESI+) m/z 373 (M+H)+.

1. additionA 4 mL vial was charged with a stir bar
2. filtrationThe crude material was filtered
3. concentrationconcentrated
4. custompurified by reverse phase HPLC (C18, 10-100% CH3CN/water (0.1% TFA))