反应详情

A solution of compound 105 (535 mg, 1.16 mmol) in THF (6.0 mL) was added aqueous HCl (1M, 6 mL)) and the mixture was stirred for 24 h at RT. The reaction mixture was poured into a mixture of EtOAc/saturated NaHCO3. The aqueous phase was washed with more EtOAc. The collected organic phases were washed with water, brine and then dried (MgSO4), filtered and concentrated in vacuo to give the crude product. The crude product was purified by continuous gradient flash chromatography using MeOH/DCM 2:98 to 10:90 as the eluent to afford the title compound as yellow foam. 13C NMR (DMSO-d6) δ 194.9, 158.7 (dd), 155.7 (dd), 149.3, 145.0, 139.8, 135.7, 133.7, 133.7, 131.6, 128.4, 127.1, 126.6, 126.5 (dd), 124.9, 124.2 (dd), 122.3, 114.8, 112.0 (dd), 111.8, 105.0 (dd), 70.3, 63.2, 53.0, 19.4

1. washThe aqueous phase was washed with more EtOAc
2. washThe collected organic phases were washed with water, brine
3. dry with materialdried (MgSO4)
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customto give the crude product
7. customThe crude product was purified by continuous gradient flash chromatography