反应详情

温度

25 °C

A solution of 2-(4-acetylamino-phenyl)-N-(6-amino-1-butyl-2,4-dioxo-1,2,3,4-tetrahydro-pyrimidin-5-yl)-acetamide (330 mg, 0.88 mmol) in methanol (7.0 mL) was treated with a 10% aqueous sodium hydroxide solution (3.54 mL). The resulting solution was stirred at 25° C. for 5 min and then was heated to 50° C. for 3 h. At this time, another portion of a 10% aqueous sodium hydroxide solution (3.54 mL) was added. The reaction was heated to 50° C. for an additional 4 h. At this time, the reaction was concentrated in vacuo. The residue was cooled to 0° C. and then treated with a 1N aqueous hydrochloric acid solution. The resulting precipitate was collected by filtration, washed with water, and dried in vacuo to afford N-[4-(3-butyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-ylmethyl)-phenyl]-acetamide (196 mg, 62%) as an orange-yellow solid: 1H NMR (DMSO-d6, 300 MHz) δ 13.32 (broad s, 1H), 10.96 (broad s, 1H), 9.94 (broad s, 1H), 7.48 (d, J=8.42 Hz, 2H), 7.17 (d, J=8.42 Hz, 1H), 3.95 (s, 2H), 3.86 (m, 2H), 1.99 (s, 3H), 1.59 (m, 2H), 1.27 (m, 2H), 0.87 (t, J=7.32 Hz, 3H).

1. temperaturewas heated to 50° C. for 3 h
2. temperatureThe reaction was heated to 50° C. for an additional 4 h
3. concentrationAt this time, the reaction was concentrated in vacuo
4. temperatureThe residue was cooled to 0° C.
5. additiontreated with a 1N aqueous hydrochloric acid solution
6. filtrationThe resulting precipitate was collected by filtration
7. washwashed with water
8. customdried in vacuo