Lithium hydroxide, monohydrate → 5-(4-chlorobenzyl)-3-(3-hydroxypropyl)-6-(2-isopropylphenyl)-1-methylpyrido[3,4-d]pyrimidine-2,4(1H,3H)-dione

HRID 60165Notes

Reaction equation

HRID 60165 reaction equation
C([O:3][CH2:4][CH2:5][CH2:6][N:7]1[C:12](=[O:13])[C:11]2[C:14]([CH2:27][C:28]3[CH:33]=[CH:32][C:31]([Cl:34])=[CH:30][CH:29]=3)=[C:15]([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=3[CH:24]([CH3:26])[CH3:25])[N:16]=[CH:17][C:10]=2[N:9]([CH3:35])[C:8]1=[O:36])=O.O[Li].O>C1COCC1.O.CC(=O)OCC>[Cl:34][C:31]1[CH:30]=[CH:29][C:28]([CH2:27][C:14]2[C:11]3[C:12](=[O:13])[N:7]([CH2:6][CH2:5][CH2:4][OH:3])[C:8](=[O:36])[N:9]([CH3:35])[C:10]=3[CH:17]=[N:16][C:15]=2[C:18]2[CH:23]=[CH:22][CH:21]=[CH:20][C:19]=2[CH:24]([CH3:26])[CH3:25])=[CH:33][CH:32]=1

Participants

6

Reactant 2

HCID 168937Lithium hydroxide, monohydrateHCID 1188753133-(5-(4-chlorobenzyl)-6-(2-isopropylphenyl)-1-methyl-2,4-dioxo-1,2-dihydro pyrido[3,4-d]pyrimidin-3(4H)-yl)propyl formate

Product 1

HCID 1188750245-(4-chlorobenzyl)-3-(3-hydroxypropyl)-6-(2-isopropylphenyl)-1-methylpyrido[3,4-d]pyrimidine-2,4(1H,3H)-dioneYield 36.4%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 3-(5-(4-chlorobenzyl)-6-(2-isopropylphenyl)-1-methyl-2,4-dioxo-1,2-dihydro pyrido[3,4-d]pyrimidin-3(4H)-yl)propyl formate (7 mg, 0.0138 mmol) in THF (0.5 mL) and water (0.5 mL) was added LiOH.H2O (1.2 mg, 0.0277 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 TLC eluted with PE/EA (1:2) to give 5-(4-chlorobenzyl)-3-(3-hydroxypropyl)-6-(2-isopropylphenyl)-1-methylpyrido[3,4-d]pyrimidine-2,4(1H,3H)-dione (2.4 mg, 36.4% yield) as a white solid. 1H NMR (CDCl3) δ: 8.79 (s, 1H), 7.38 (d, J=3.8 Hz, 2H), 7.20-7.12 (m, 1H), 7.10 (t, J=8.4 Hz, 2H), 6.97 (d, J=7.5 Hz, 1H), 6.71 (d, J=8.4 Hz, 2H), 5.34 (s, 1H), 4.79 (d, J=14.9 Hz, 1H), 4.19 (t, J=6.1 Hz, 2H), 3.76 (s, 3H), 3.48 (d, J=6.1 Hz, 2H), 2.77 (s, 1H), 2.01 (d, J=5.9 Hz, 1H), 1.92-1.80 (m, 2H), 1.10 (d, J=6.8 Hz, 3H), 1.02 (d, J=6.9 Hz, 3H). LCMS: MH+ 478 and TR=4.088 min.

Workup

  1. washThe organic layer was washed with brine (10 mL)
  2. dry with materialdried over Na2SO4
  3. concentrationconcentrated to a residue which
  4. customwas purified by Prep TLC
  5. washeluted with PE/EA (1:2)

Sources & evidence

ORD record
ord-030518ecb52f420396c2e6e0d6eed155
Source dataset
uspto-grants-2016_09
Patent number
US09440973B2

Reaction notes

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