反应详情

A mixture of 1-(2-pyrrolidin-1-yl-ethyl)-1H-indazol-6-ylamine (0.620 g, 2.69 mmol), (4-hydroxy-phenyl)-acetic acid (0.242 g, 5.15 mmol), HATU (1.23 g, 3.23 mmol) and diisopropylethylamine (0.939 mL, 5.39 mmol) in 9 mL of DMF was stirred at room temperature for 6 hours, concentrated under reduced pressure and the residue dissolved in ethyl acetate and washed with aqueous NaHCO3 (×3), brine (×2), and water. The organic layer was dried (Na2SO4), filtered, concentrated under reduced pressure and the residue purified by flash chromatography (60–90% ethyl acetate (1% triethylamine) in hexanes) to provide the title compound. 1H NMR (300 MHz, DMSO-D6) δ ppm 1.62 (m, 4 H), 2.45 (m, 4 H), 2.83 (t, J=6.78 Hz, 2 H), 3.53 (d, J=5.76 Hz, 2 H), 4.38 (t, J=6.78 Hz, 2 H), 6.71 (m, 2 H), 7.13 (m, 3 H), 7.64 (m, 1 H), 7.94 (s, 1 H), 8.13 (m, 1 H), 9.25 (s, 1 H), 10.24 (s, 1 H); MS (ESI) m/z 365 [M+H]+.

1. concentrationconcentrated under reduced pressure
2. dissolutionthe residue dissolved in ethyl acetate
3. washwashed with aqueous NaHCO3 (×3), brine (×2), and water
4. dry with materialThe organic layer was dried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customthe residue purified by flash chromatography (60–90% ethyl acetate (1% triethylamine) in hexanes)