反应详情

Triethylamine (11 μL, 0.082 mmol) and acetic anhydride (8 μL, 0.082 mmol) were added to a solution of tert-butyl 4-((5-amino-2-(5-cyanopyrazin-2-ylamino)-pyridin-4-ylamino)-methyl)-piperidine-1-carboxylate (29 mg, 0.068 mmol) in DMF (1 mL) at 0° C. After 2 hours, the mixture was loaded onto a MP-TsOH SPE cartridge, and eluted with 2M ammonia in methanol. The basic fractions were combined and concentrated. Purified by preparative HPLC gave N-(6-(5-cyanopyrazin-2-ylamino)-4-(piperidin-4-ylmethylamino)pyridin-3-yl)acetamide (7.4 mg, 32%).

1. washeluted with 2M ammonia in methanol
2. concentrationconcentrated
3. customPurified by preparative HPLC