Potassium Carbonate → 2-[(2-Cyclopropylethyl)oxy]-8-(methoxy)-9-(tetrahydro-3-furanylmethyl)-9H-purin-6-amine

HRID 1010981Notes

Reaction equation

FC(F)(F)C(O)=O.[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])[NH:20]3)=[C:16]([NH2:25])[N:15]=2)[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]1

Participants

Conditions

Temperature: 60 °C

Procedure

To a solution of 2-[(2-Cyclopropylethyl)oxy]-8-methoxy-9H-purin-6-amine trifluoroacetic acid salt (300 mg) in dry DMF (5 mL) was added anhydrous potassium carbonate (457 mg) and the mixture was heated at 60° C. for 1.5 h. The reaction was cooled to room temperature and tetrahydro-3-furanylmethyl methanesulfonate (164 mg) was added. The reaction was heated at 90° C. for 3.5 h and was then quenched into water (50 mL) and extracted with EtOAc (3×50 mL). The organics were separated, dried by passing through a hydrophobic frit and evaporated under reduced pressure to give a glassy solid. The material was purified by C18 reverse phase chromatography (ISCO) using water (0.1% formic acid)-acetonitrile (0.05% formic acid) as eluent (20-60%) to give the title compound (103.8 mg).

Workup

temperatureThe reaction was cooled to room temperature
temperatureThe reaction was heated at 90° C. for 3.5 h
customwas then quenched into water (50 mL)
extractionextracted with EtOAc (3×50 mL)
customThe organics were separated
customdried
customevaporated under reduced pressure
customto give a glassy solid
customThe material was purified by C18 reverse phase chromatography (ISCO)

Sources & evidence

ORD record: ord-ef154a91e8c342a0a17cc71e04e6b719
Source dataset: uspto-grants-2011_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07977344B2

Reaction notes

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