反应详情

3-(Methylthio)-5-(p-tolylamino)-1,2,4-triazine-6-carboxamide (31 mg, 0.11 mmol) was dissolved in 5 mL NMP. To it was added mCPBA (77%) (100 mg, 0.44 mmol). The mixture was stirred at RT for 1 h. To it was added DIEA (0.20 mL, 1.1 mmol) and (R)-2-aminobutanamide hydrochloride (77 mg, 0.55 mmol). The mixture was stirred at 80° C. for 2.5 h. The mixture was cooled to RT, acidified with TFA (0.3 mL), diluted with water, filtered and subjected to reverse phase preparative HPLC to isolate the title compound (48 mg) as HCl salt. MS found for C15H19N7O2 as (M+H)+ 330.4. UV: λ=235, 278 nm. Proton NMR: (CD3OD) δ 7.60 (2H, d, J=8.0 Hz), 7.28 (2H, d, J=8.0 Hz), 4.40 (1H, dd, J=8.0; 5.2 Hz), 2.36 (3H, s), 2.00 (1H, m), 1.90 (1H, m), 1.05 (3H, t, J=7.2 Hz) ppm.

1. stirringThe mixture was stirred at 80° C. for 2.5 h
2. temperatureThe mixture was cooled to RT
3. filtrationfiltered