反应详情

To a solution of 0.080 g (0.32 mmol) of ([4-(3-cyclopropylpyrazin-2-yl)phenyl]acetic acid in 1.00 ml DMF was added 0.11 g (0.38 mmol) of 2-[(1R)-1-ammonioethyl]-5-(2,2,2-trifluoroethoxy)pyridinium dichloride, 0.056 g (0.41 mmol) of HOAt, 0.078 g (0.41 mmol) of EDC, and 0.17 mL (0.94 mmol) of DIEA. After 12 h at room temperature, the reaction mixture was purified by reverse-phase preparative HPLC (5->95% CH3CN/H2O over 15 min, 0.05% added TFA, C18) to afford 0.13 g (73.8%) of 2-[4-(3-cyclopropylpyrazin-2-yl)phenyl]-N-{(1R)-1-[5-(2,2,2-trifluoroethoxy)pyridin-2-yl]ethyl}acetamide. 1H NMR (CDCl3, 400 MHz) δ 8.36 (s, 2H); 8.27 (d, J=2.74 Hz, 1H); 7.68 (d, J=8.15 Hz, 2H); 7.40 (d, J=8.06 Hz, 2H); 7.34 (m, 2H); 7.20 (d, J=5.95 Hz, 1H); 5.15 (m, 1H); 4.41 (dd, J=7.88, 15.84 Hz, 2H); 3.65 (s, 2H); 2.22 (m, 1H); 1.46 (d, J=6.95, 3H); 1.19 (m, 2H); 0.99 (m, 2H). HRMS (ES) [M+1]+calcd for C24H24F3N4O2: 457.1851, Found: 457.1831. FLIPR alpha1I IP=47 nM.

1. customthe reaction mixture was purified by reverse-phase preparative HPLC (5->95% CH3CN/H2O over 15 min, 0.05% added TFA, C18)