反应详情

The products of Example 91F (0.572 g, 2.768 mmol) and methyl 3-amino-4-(4-(tert-butoxycarbonylamino)phenylthio)benzoate the product of Example 89C or Example 92C (0.902 g, 2.409 mmol) were reacted in anhydrous ethanol (25 mL) under a nitrogen atmosphere at reflux for 30 minutes. The reaction was cooled and concentrated by rotary evaporation. The residue was dissolved in methylene chloride (50 mL) and washed with saturated aqueous sodium hydrogencarbonate (25 mL) and water (25 mL). The organic phase was dried over magnesium sulfate, filtered, and concentrated by rotary evaporation. Purification by silica gel flash chromatography eluting with 3:97 methanol/methylene chloride afforded the title compound as a white solid (0.505 g, 0.927 mmol, 33%). 1H NMR (300 MHz, DMSO-D6) δ ppm 1.32 (d, J=6.99 Hz, 6 H) 1.48 (s, 9 H) 2.99-3.21 (m, 1 H) 3.83 (s, 3 H) 6.93 (d, J=8.46 Hz, 1 H) 7.37 (d, J=8.82 Hz, 2 H) 7.55 (d, J=8.82 Hz, 2 H) 7.55-7.64 (m, 2 H) 7.75 (dd, J=8.46, 1.84 Hz, 1 H) 7.91 (d, J=1.84 Hz, 1 H) 8.41 (d, J=8.46 Hz, 1 H) 8.45 (s, 1 H) 9.62 (s, 1 H) 9.92 (s, 1 H). MS (ESI+) m/z 545 (M+H)+.

1. temperatureat reflux for 30 minutes
2. temperatureThe reaction was cooled
3. concentrationconcentrated by rotary evaporation
4. dissolutionThe residue was dissolved in methylene chloride (50 mL)
5. washwashed with saturated aqueous sodium hydrogencarbonate (25 mL) and water (25 mL)
6. dry with materialThe organic phase was dried over magnesium sulfate
7. filtrationfiltered
8. concentrationconcentrated by rotary evaporation
9. customPurification by silica gel flash chromatography
10. washeluting with 3:97 methanol/methylene chloride