反应详情

2-[4-{1-[4-(2-azepan-1-yl-ethoxy)-phenyl]-1-hydroxy-ethyl}-7-(tert-butyl-dimehyl-silyloxy)-2H-chromen-3-yl]-5-(tert-butyl-dimethyl-silyloxy)-phenol, prepared as in STEP A above, was dissolved in toluene (8 mL) and treated with diluted HCl (0.4 mL of concentrated HCl:H2O=1:2 v/v). The reaction mixture was vigorously stirred at room temperature for 1.5 h, then diluted with water and ethyl acetate. The resulting layers were separated and organic layer washed successively with saturated NaHCO3, brine and dried over MgSO4. The desiccant was filtered off, and the filtrate concentrated. Flash chromatography with ethyl acetate:hexane:CH3OH (containing 1% NH4OH)=49:49:2 as the eluent yielded the title compound as a light yellow oil.

1. customThe resulting layers were separated
2. washorganic layer washed successively with saturated NaHCO3, brine
3. dry with materialdried over MgSO4
4. filtrationThe desiccant was filtered off
5. concentrationthe filtrate concentrated