Lithium hydroxide, monohydrate → HCID 118874989, compound

Participants

Reaction Steps

To a solution of 3-(5-benzyl-1-methyl-2,4-dioxo-6-(3-(trifluoromethoxy)phenyl)-1,2-dihydro pyrido[3,4-d]pyrimidin-3(4H)-yl)propyl formate (50 mg, 0.097 mmol) in THF (0.5 mL) and water (0.5 mL) was added LiOH.H2O (8.18 mg, 0.194 mmol). The reaction was stirred at RT for 30 min then diluted with EA (5 mL). The organic layer was washed with brine (10 mL), dried over Na2SO4 and concentrated to a residue which was purified by Prep HPLC to give 5-benzyl-3-(3-hydroxypropyl)-1-methyl-6-(3-(trifluoromethoxy)phenyl)pyrido[3,4-d]pyrimidine-2,4(1H,3H)-dione (26.4 mg, 56% yield) as a white solid. 1H NMR (CDCl3) δ: 8.79 (s, 1H), 7.45-7.37 (m, 1H), 7.29 (d, J=7.7 Hz, 1H), 7.24 (s, 2H), 7.22-7.11 (m, 3H), 6.86 (d, J=7.1 Hz, 2H), 4.71 (s, 2H), 4.18 (t, J=6.1 Hz, 2H), 3.73 (d, J=13.2 Hz, 3H), 3.42 (t, J=5.6 Hz, 2H), 1.88-1.76 (m, 2H). LCMS: MH+ 486 and TR=2.808 min

Provenance & Evidence