反应详情

To a stirred solution of (2R,3S,5S)-2-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)-5-[[tert-butyl(dimethyl)silyl]oxymethyl]tetrahydrofuran-3-carbonitrile (compound 38h, crude, 100 mg) in THF (5 mL) was added TBAF solution (1M in THF, 6 mL, 6 mmol) at 0° C. After being stirred at room temperature for 4 hours, the reaction solution was washed with saturated NH4Cl solution, dried over Na2SO4 and concentrated in vacuo. The residue was purified by preparative HPLC to afford 9 mg of (2R,3S,5S)-2-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)-5-(hydroxymethyl)tetrahydrofuran-3-carbonitrile (Example 38) as a white solid.

1. washthe reaction solution was washed with saturated NH4Cl solution
2. dry with materialdried over Na2SO4
3. concentrationconcentrated in vacuo
4. customThe residue was purified by preparative HPLC