反应详情

To a solution of 3-(5-(4-chlorobenzyl)-1-methyl-2,4-dioxo-6-(pyridin-3-yloxy)-1,2-dihydropyrido[2,3-d]pyrimidin-3(4H)-yl)propyl formate (10.3 mg, 0.021 mmol) in THF (5 mL) and water (5 mL), was added LiOH.H2O (1.80 mg, 0.042 mmol) The reaction was stirred at RT for 30 min then diluted with EA (10 mL) and water (10 mL). The organic layer was dried over Na2SO4, filtered and concentrated to a residue which was purified by Prep HPLC to give 5-(4-chlorobenzyl)-3-(3-hydroxypropyl)-1-methyl-6-(pyridin-3-yloxy)pyrido[2,3-d]pyrimidine-2,4(1H,3H)-dione (6 mg, 61.8% yield) as a white solid. 1H NMR (CDCl3) δ: 8.39 (d, J=4.6 Hz, 1H), 8.33 (d, J=4.5 Hz, 2H), 7.24 (d, J=4.7 Hz, 1H), 7.17 (s, 4H), 7.10 (dd, J=8.4, 1.6 Hz, 1H), 4.75 (s, 2H), 4.24 (t, J=6.1 Hz, 2H), 3.71 (s, 3H), 3.62-3.49 (m, 2H), 2.99 (t, J=6.8 Hz, 1H), 2.00-1.84 (m, 2H). LCMS: MH+ 453 and TR=1.963 min.

1. dry with materialThe organic layer was dried over Na2SO4
2. filtrationfiltered
3. concentrationconcentrated to a residue which
4. customwas purified by Prep HPLC