6-methoxy-7-(2-(N-methyl-N-(6-methylpyrimidin-4-yl)amino)ethoxy)-3-((pivaloyloxy)methyl)-3,4-dihydroquinazolin-4-one → 6-methoxy-7-(2-(N-methyl-N-(6-methylpyrimidin-4-yl)amino)ethoxy)-3,4-dihydroquinazolin-4-one
Reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][C:12]=1[O:13][CH2:14][CH2:15][N:16]([CH3:24])[C:17]1[CH:22]=[C:21]([CH3:23])[N:20]=[CH:19][N:18]=1)[N:9]=[CH:8][N:7](COC(=O)C(C)(C)C)[C:6]2=[O:33]>N>[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][C:12]=1[O:13][CH2:14][CH2:15][N:16]([CH3:24])[C:17]1[CH:22]=[C:21]([CH3:23])[N:20]=[CH:19][N:18]=1)[N:9]=[CH:8][NH:7][C:6]2=[O:33]Participants
Reactant 1
Product 1
Reagents, catalysts & solvents 1
Procedure
A solution of 6-methoxy-7-(2-(N-methyl-N-(6-methylpyrimidin-4-yl)amino)ethoxy)-3-((pivaloyloxy)methyl)-3,4-dihydroquinazolin-4-one (365 mg, 0.8 mmol) in methanolic ammonia (30 ml of a 3M solution) was stirred at ambient temperature for 16 hours. The volatiles were removed by evaporation, the residue was triturated with ether, the solid was collected by filtration, washed with ether and dried under vacuum to give 6-methoxy-7-(2-(N-methyl-N-(6-methylpyrimidin-4-yl)amino)ethoxy)-3,4-dihydroquinazolin-4-one (250 mg, 92%). 1H NMR Spectrum: (DMSOd6; CF3COOD) 2.44(s, 3H); 3.32 and 3.39(2s, 3H); 3.86 and 3.87(2s, 3H); 4.12(t, 1H); 4.25(t, 1H); 4.42(m, 2H); 7.02 and 7.23(2s, 1H); 7.24(t, 1H); 7.50(s, 1H); 8.55 and 8.8(2m, 1H); 8.78 and 8.80(2s, 1H) MS-ESI: 342 [MH]+
Workup
- customThe volatiles were removed by evaporation
- customthe residue was triturated with ether
- filtrationthe solid was collected by filtration
- washwashed with ether
- customdried under vacuum
Sources & evidence
- ORD record
- ord-abd936e3524048999e1847484a6a52cc
- Source dataset
- uspto-grants-2001_07
- Patent number
- US06258951B1
Reaction notes
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