反应详情

To a solution of 7-(4-chlorobenzyl)-3-methyl-1-(2-(tetrahydro-2H-pyran-2-yloxy)ethyl)-8-(2-(3-(trifluoromethoxy)phenoxy)ethoxy)-1H-purine-2,6(3H,7H)-dione (70 mg, 0.107 mmol) in methanol (3 mL) was added concentrated HCl (4 drops). The mixture was stirred for 1 h at room temperature. The mixture was neutralized with saturated sodium bicarbonate, and extracted with ethyl acetate. The organic phase was dried over sodium sulfate, filtered and concentrated to give a crude product which was recrystallized from ethanol to give 7-(4-chlorobenzyl)-1-(2-hydroxyethyl)-3-methyl-8-(2-(3-(trifluoromethoxy)phenoxy)ethoxy)-1H-purine-2,6(3H,7H)-dione (16 mg, 25.6% yield) as white solid. 1H-NMR (DMSO-d6) δ 7.45-7.41(t, 1H), 7.32-7.27(m, 4H), 7.03-6.95(m, 3H), 5.19(s, 2H), 4.81(s, 2H), 4.49-4.46(t, 1H), 4.41-4.40(d, 2H), 3.91-3.88(t, 2H), 3.44-3.40(m, 5H), 1.69-1.65(t, 2H). LCMS retention time 3.142 min; LCMS MH+ 569.

1. extractionextracted with ethyl acetate
2. dry with materialThe organic phase was dried over sodium sulfate
3. filtrationfiltered
4. concentrationconcentrated
5. customto give a crude product which
6. customwas recrystallized from ethanol