反应详情

温度

20 °C

A solution of Example 9 (20 mg, 54 μmol) in DMF (2 ml) was treated with NH4Cl (17 mg, 323 μmol) and NaN3 (21 mg, 323 μmol). The mixture was heated under reflux for 6 hr, then stirred for 18 hr at 20° C., before being partitioned between EtOAc (30 ml) and H2O (5 ml). The aqueous phase was extracted with EtOAc (3×15 ml) and the combined organic extracts were washed with brine (30 ml) and dried (MgSO4). Filtration, solvent evaporation under reduced pressure, and FCC (EtOH-EtOAc, 1:3) afforded the title compound (16 mg, 72%) as a pale yellow solid. δH ((CD3)2CO) 1.30-1.88 (m, 8H), 2.60-2.71 (m, 1H), 3.62-3.69 (m, 1H), 4.23-4.30 (m, 1H), 6.20 (dd, 1H), 6.44 (d, 1H), 6.50 (d, 1H), 6.87 (d, 1H), 7.55 (t, 1H), 7.63-7.68-(m, 1H), 7.72-7.76 (m, 1H), 7.80 (d, 1H), 8.30 (d, 1H), 8.73 (s, 1H); m/z (ES−) 414 [M−H]−.

1. temperatureThe mixture was heated
2. temperatureunder reflux for 6 hr
3. custombefore being partitioned between EtOAc (30 ml) and H2O (5 ml)
4. extractionThe aqueous phase was extracted with EtOAc (3×15 ml)
5. washthe combined organic extracts were washed with brine (30 ml)
6. dry with materialdried (MgSO4)
7. filtrationFiltration, solvent evaporation under reduced pressure, and FCC (EtOH-EtOAc, 1:3)