反应详情

To a solution of 6-benzyl-1-methyl-6H-pyrrolo[2,3-e][1,2,4]triazolo[4,3-a]pyridine-7-carboxylic acid (0.045 g, 0.15 mmol, from Step 3) in DMF (1 mL) was added N,N-diisopropylethylamine (0.15 mL, 0.86 mmol, Aldrich) followed by N,N,N′,N′-tetramethyl-O-(7-azabenzotriazol-1-yl)uronium hexafluorophosphate (0.125 g, 0.329 mmol, Aldrich). After about 30 seconds, trans-3-aminocyclobutanecarbonitrile trifluoroacetate (0.060 g, 0.28 mmol, from Step 4) in DMF (2 mL) was added and the reaction was stirred overnight. The reaction was diluted with MeCN and filtered, then purified via preparative HPLC-MS (C18 eluting with a gradient of MeCN/H2O containing 0.15% NH4OH). Yield: (35 mg, 62%).

1. filtrationfiltered
2. custompurified via preparative HPLC-MS (C18
3. washeluting with a gradient of MeCN/H2O containing 0.15% NH4OH)