Potassium Carbonate → 2-[(2-Cyclopropylethyl)oxy]-8-(methoxy)-9-(tetrahydro-3-furanylmethyl)-9H-purin-6-amine
Reaction equation
FC(F)(F)C(O)=O.[CH:8]1([CH2:11][CH2:12][O:13][C:14]2[NH:15][C:16]([NH2:25])=[C:17]3[C:21]([N:22]=2)=[N:20][C:19]([O:23][CH3:24])=[N:18]3)[CH2:10][CH2:9]1.C(=O)([O-])[O-].[K+].[K+].CS(O[CH2:37][CH:38]1[CH2:42][CH2:41][O:40][CH2:39]1)(=O)=O>CN(C=O)C>[CH:8]1([CH2:11][CH2:12][O:13][C:14]2[N:22]=[C:21]3[C:17]([N:18]=[C:19]([O:23][CH3:24])[N:20]3[CH2:37][CH:38]3[CH2:42][CH2:41][O:40][CH2:39]3)=[C:16]([NH2:25])[N:15]=2)[CH2:10][CH2:9]1Participants
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 60 °C
Procedure
A stirring mixture of 2-[(2-cyclopropylethyl)oxy]-8-(methoxy)-1H-purin-6-amine trifluoroacetic acid salt (2.89 g), potassium carbonate (4.41 g) and dry DMF (32 ml) was heated at 60° C. under nitrogen for 90 minutes. Tetrahydro-3-furanylmethyl methanesulfonate (1.869 g, isomer 1) was then added and stirring continued at 70° C. for 1 h, then at 90° C. for 2 h. The solvent was evaporated and the residue treated with water and extracted three times with ethyl acetate. The combined extracts were washed with water then brine, dried by passing through a hydrophobic frit and evaporated to a brown oil. This was purified on a 360 gm C18 column using water (+0.1% formic acid)/acetonitrile (+0.05% formic acid). Appropriate fractions were combined and evaporated, yield 814 mg.
Workup
- waitat 90° C. for 2 h
- customThe solvent was evaporated
- additionthe residue treated with water
- extractionextracted three times with ethyl acetate
- washThe combined extracts were washed with water
- dry with materialbrine, dried
- customevaporated to a brown oil
- customThis was purified on a 360 gm C18 column
- customevaporated
Sources & evidence
- ORD record
- ord-b0363e404d744e2da1fc2e4fba064b31
- Source dataset
- uspto-grants-2011_07
- Patent number
- US07977344B2
Reaction notes
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