反应详情

To 3-[2,6-difluoro-3-(propane-1-sulfonylamino)-benzoyl]-1H-pyrrolo[2,3-b]pyridine-5-carboxylic acid (P-1559, 38.0 mg, 0.090 mmol) in tetrahydrofuran (2.3 mL) was added a solution of ethylamine (2.0 M in tetrahydrofuran, 0.20 mL), bromo-tris-pyrrolidino-phosphonium hexafluorophosphate (80.0 mg, 0.17 mmol) and triethylamine (0.30 mL, 2.2 mmol) under an atmosphere of nitrogen. The reaction mixture was stirred overnight at room temperature. The reaction was poured into water and extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated and purified by silica gel column chromatography eluting with 40% ethyl acetate in hexane to give the compound as a white solid (P-1630, 13.2 mg, 33%). MS (ESI) [M−H+]−=449.0.

1. extractionextracted with ethyl acetate
2. dry with materialThe organic layer was dried over anhydrous sodium sulfate
3. filtrationfiltered
4. concentrationThe filtrate was concentrated
5. custompurified by silica gel column chromatography
6. washeluting with 40% ethyl acetate in hexane