反应详情

To a solution of 8-bromo-7-(4-fluorobenzyl)-3-methyl-1-(3-(tetrahydro-2H-pyran-2-yloxy)propyl)-1H-purine-2,6(3H,7H)-dione (26 g, 52.5 mmol) in ethanol (500 mL) was added concentrated HCl (50 mL) and the mixture was stirred at room temperature for 1 h. The mixture was concentrated to half its volume and the product precipitated. The solids were collected and washed with water and ethanol; then dried under vacuum to give 8-bromo-7-(4-fluorobenzyl)-1-(3-hydroxypropyl)-3-methyl-1H-purine-2,6(3H,7H)-dione (18.1 g, 83.9% yield) as white solid. LCMS retention time 1.243 min; LCMS MH+ 411.

1. concentrationThe mixture was concentrated to half its volume
2. customthe product precipitated
3. customThe solids were collected
4. washwashed with water and ethanol
5. customthen dried under vacuum