反应详情

A solution of 2-[3,5-bis(trifluoromethyl)phenyl]-4-[1-(4-{[tert-butyl(dimethyl)silyl]oxy}cyclohexyl)-1H-pyrazol-4-yl]furo[2,3-c]pyridin-7-amine (104 mg) in THF (2 mL) was treated with tetra-n-butylammonium fluoride (2.7 M in water, 0.20 mL, 0.56 mmol) and stirred at RT overnight. The solution was diluted with EtOAc and washed with brine. The aqueous phase was extracted with EtOAc and the combined organic fractions were dried over sodium sulfate and concentrated. Purification of the residue by ISCO chromatography (0 to 5% 7 N NH3/MeOH:EtOAc) afforded 33 mg (35%) of the title compound as a yellow solid. 1H NMR (400 MHz, CD3OD): δ 1.48-1.60 (m, 2H) 2.01 (qd, J=12.7, 3.2 Hz, 2H) 2.10-2.26 (m, 4H) 3.73 (tt, J=10.9, 4.1 Hz, 1H) 4.26 (tt, J=11.9, 3.9 Hz, 1H) 7.88 (s, 1H) 7.91-7.94 (m, 2H) 8.00-8.03 (m, 1H) 8.12-8.15 (m, 1H) 8.67 (s, 2H); MS (ESI): 510.34 [M+H]+; HPLC tR=1.16 min (TOF: polar—3 min).

1. washwashed with brine
2. extractionThe aqueous phase was extracted with EtOAc
3. dry with materialthe combined organic fractions were dried over sodium sulfate
4. concentrationconcentrated
5. customPurification of the residue by ISCO chromatography (0 to 5% 7 N NH3/MeOH:EtOAc)