反应详情

(R)—N-(5-(hydroxymethyl)-2,3-dihydro-1H-inden-2-yl)propane-2-sulfonamide (23 mg, 0.086 mmol) was dissolved in DCM (5 mL) and thionyl chloride (51 mg, 0.43 mmol) was added. The reaction mixture was stirred at room temperature for 1 h before being concentrated to dryness. The whole was dissolved in DMF (2 mL) to this was added tert-butyl 3-(trifluoromethyl)-6,7-dihydro-1H-pyrazolo[4,3-c]pyridine-5(4H)-carboxylate (25 mg, 0.086 mmol) followed by potassium carbonate (24 mg, 0.172 mmol). The reaction mixture was heated to 65° C. for 3 h before being quenched with water (2 mL) and the organics extracted with EtOAc (3×5 mL). The combined organics were washed with brine, dried (MgSO4) and concentrated under reduced pressure. The residue was treated with 1:1 TFA/DCM (2 mL) for 2 h before being concentrated to dryness. Purification by preparative basic HPLC gave (R)—N-(5-((3-(trifluoromethyl)-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridin-1-yl)methyl)-2,3-dihydro-1H-inden-2-yl)propane-2-sulfonamide (2.3 mg, 5.2 μmol, 6.1%). MS (ESI): m/z [M+H]+ 443.2

1. concentrationbefore being concentrated to dryness
2. dissolutionThe whole was dissolved in DMF (2 mL) to
3. temperatureThe reaction mixture was heated to 65° C. for 3 h
4. custombefore being quenched with water (2 mL)
5. extractionthe organics extracted with EtOAc (3×5 mL)
6. washThe combined organics were washed with brine
7. dry with materialdried (MgSO4)
8. concentrationconcentrated under reduced pressure
9. additionThe residue was treated with 1:1 TFA/DCM (2 mL) for 2 h
10. concentrationbefore being concentrated to dryness
11. customPurification by preparative basic HPLC