反应详情

Triethylamine (94 μL, 0.673 mmol) was added to a solution of the hydrochloride salt of (6S,9R)-6-(2,3-difluorophenyl)-3-(2,2,2-trifluoroethyl)-6,7,8,9-tetrahydro-5H-imidazo[1,2-a]azepin-9-amine (94 mg, 0.224 mmol) and 4-nitrophenyl chloroformate (45 mg, 0.224 mmol) in tetrahydrofuran (3 mL) at 0° C. After 1 h, 8-oxo-7-piperidinium-4-yl-8,9-dihydro-7H-purin-3-ium dichloride (66 mg, 0.224 mmol) and triethylamine (94 μL, 0.673 mmol) were added and the mixture allowed to warm to ambient temperature. After 1 h, saturated aqueous sodium carbonate was added and the mixture was extracted with dichloromethane. The organic layer was washed with saturated aqueous sodium bicarbonate (3×), saturated brine, dried over sodium sulfate, filtered and concentrated. Purification by reverse phase HPLC (C-18, 95% water/acetonitrile→5% water/acetonitrile with 0.1% trifluoroacetic acid) gave the title compound (76 mg). MS 591.2214 (M+1).

1. waitAfter 1 h
2. extractionthe mixture was extracted with dichloromethane
3. washThe organic layer was washed with saturated aqueous sodium bicarbonate (3×), saturated brine
4. dry with materialdried over sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated
7. customPurification by reverse phase HPLC (C-18, 95% water/acetonitrile→5% water/acetonitrile with 0.1% trifluoroacetic acid)