反应详情

In a separate flask, (5-methyl-isoxazol-3-yl)-methanol (32 mg, 0.28 mmol) was dissolved in 4 mL of CH2Cl2 along with 1.3 eq. of Et3N. The solution was cooled in an ice bath and methanesulfonyl chloride (1.2 eq) was added. The reaction mixture was warmed to room temperature and stirred for 45 minutes. It was then quenched with brine and the two layers were separated. The organic layer was dried with Na2SO4 and concentrated under reduced pressure to afford the mesylated derivative. This mesylate was then added to a solution containing 5-(2,5-diaza-bicyclo[2.2.1]hept-2-yl)-2-furan-2-yl-[1,2,4]triazolo[1,5-a][1,3,5]triazin-7-ylamine (0.14 mmol; see subpart (a) above), and Et3N (0.3 mmol) in 3 mL of CH3CN. The resulting reaction mixture was stirred at room temperature for 18 hours. It was then concentrated and purified by preparative HPLC to afford 2-furan-2-yl-5-[5-(5-methyl-isoxazol-3-ylmethyl)-2,5-diaza-bicyclo[2.2.1]hept-2-yl]-[1,2,4]triazolo[1,5-a][1,3,5]triazin-7-ylamine. 1H NMR (400 Hz, DMSO-d6) δ 8.20 (brs, 1H), 7.80 (d, J=1.0 Hz, 1H), 7.00 (d, J=3.6 Hz, 1H), 6.60 (dd, J=3.6, 1.0 Hz, 1H), 6.30 (s, 1H), 4.80 (brs, 2H), 4.20-4.30 (m, 8H), 2.35 (s, 3H), 2.30 (m, 1H). MS m/z: 394 [M+H]+.

1. temperatureThe solution was cooled in an ice bath
2. customIt was then quenched with brine
3. customthe two layers were separated
4. dry with materialThe organic layer was dried with Na2SO4
5. concentrationconcentrated under reduced pressure
6. customto afford the mesylated derivative
7. customThe resulting reaction mixture
8. stirringwas stirred at room temperature for 18 hours
9. concentrationIt was then concentrated
10. custompurified by preparative HPLC