反应详情

A solution of (R)-1-(5-Acetoxyhexyl)-7-benzyl-3,8-dimethylxanthine (500 mg) in methanol (20 ml) was combined with hydrogen chloride in ether (1 M, 2.5 ml) and stirred at room temperature for 12 hours. After evaporation of the solvent under reduced pressure, the residue was dissolved in ethyl acetate (100 ml). The solution was washed with saturated aqueous sodium bicarbonate solution (30 ml), dried over magnesium sulfate and concentrated under reduced pressure to provide (R)-1-(5-hydroxyhexyl)-7-benzyl-3,8-dimethylxanthine (420 mg).

1. customAfter evaporation of the solvent under reduced pressure
2. dissolutionthe residue was dissolved in ethyl acetate (100 ml)
3. washThe solution was washed with saturated aqueous sodium bicarbonate solution (30 ml)
4. dry with materialdried over magnesium sulfate
5. concentrationconcentrated under reduced pressure