反应详情

6-(6-Methoxypyridin-3-ylamino)-5-(2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-yl)nicotinaldehyde (641.5 mg, 1.440 mmol) was suspended in THF (14 mL) and the reaction was cooled in an ice bath under nitrogen. Then, methylmagnesium bromide (3.0 M solution in diethyl ether, 1.65 mL, 4.95 mmol) was added via syringe, and the reaction was allowed to warm up to room temperature. After 1 h and 45 min, the reaction was cooled in an ice bath and the reaction was treated with saturated ammonium chloride, dropwise at first as gas evolution was observed. Then, the reaction was warmed to room temperature and diluted with water (15 mL). The layers were separated, and the aqueous phase was extracted with 10:1 DCM/MeOH. The organic layer and the organic extracts were combined, concentrated, and dried under high vacuum to give 1-(6-(6-methoxypyridin-3-ylamino)-5-(2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-yl)pyridin-3-yl)ethanol (725 mg). 1H NMR (CDCl3, 400 MHz) δ 12.52 (s, 1H), 9.81 (s, 1H), 8.43 (s, 1H), 8.36-8.19 (m, 3H), 6.83-6.77 (m, 1H), 5.88 (d, J=9.00 Hz, 1H), 5.01 (d, J=5.87 Hz, 1H), 4.21 (d, J=10.95 Hz, 1H), 3.89-3.81 (m, 1H), 2.91 (s, 3H), 2.21-1.65 (m, 6H), 1.63-1.61 (m, 3H). m/z (ESI, pos. ion) 462 (M+H)+.

1. temperaturethe reaction was cooled in an ice bath under nitrogen
2. temperature45 min, the reaction was cooled in an ice bath
3. temperatureThen, the reaction was warmed to room temperature
4. customThe layers were separated
5. extractionthe aqueous phase was extracted with 10:1 DCM/MeOH
6. concentrationconcentrated
7. customdried under high vacuum