反应详情

To a solution of 8-chloro-3-ethyl-7-(4-fluorobenzyl)-1-(3-hydroxypropyl)-1H-purine-2,6(3H,7H)-dione (50 mg, 0.117 mmol, intermediate 78) in propanol (5 mL) was added sodium (10 mg, 0.43 mmol). The reaction was stirred at room temperature for 1 h. The reaction was partitioned between ethyl acetate and brine. The organic phase was dried and concentrated to give a crude product, which was purified via preparative HPLC to give 7-(4-chlorobenzyl)-3-ethyl-1-(3-hydroxypropyl)-8-propoxy-1H-purine-2,6(3H,7H)-dione (11.6 mg, 24.4% yield) as white solid. 1H-NMR (CD3OD) δ 7.24-7.29(s, 4H), 5.21(s, 2H), 4.39-4.42(t, 2H), 3.98-4.05(m, 4H), 3.49-3.53(m, 2H), 1.73-1.81(m, 4H), 1.20-1.23(m, 3H), 0.90-0.94(m, 3H). LCMS retention time 2.881; LCMS MH+ 421.

1. customThe reaction was partitioned between ethyl acetate and brine
2. customThe organic phase was dried
3. concentrationconcentrated
4. customto give a crude product, which
5. customwas purified via preparative HPLC