反应详情

To a stirred solution of Intermediate 1 (see Example 1.1, 20 mg, 0.072 mmol), HATU (33 mg, 0.087 mmol) and DIEA (0.025 mL, 0.145 mmol) in DMF (1 mL) was added (S)-2-(tert-butyldimethylsilyloxy)-1-(pyridin-4-yl)ethanamine (18 mg, 0.072 mmol). The reaction mixture was stirred at room temperature for 1 h, and then treated with 1 M TBAF solution in THF (0.144 mL, 0.144 mmol). The reaction was stirred at room temperature for 1 h, and then purified by preparative LCMS to give the title compound as white solid (6.3 mg). LCMS m/z=397.2 [M+H]+; 1H NMR (400 MHz, CDCl3) δ ppm 0.48 (td, J=4.8 and 3.5 Hz, 1H), 1.14-1.19 (m, 1H), 2.10-2.15 (m, 1H), 2.25-2.31 (m, 1H), 2.93 (d, J=16.6 Hz, 1H), 3.03 (dd, J=6.2 and 16.5 Hz, 1H), 3.96-4.02 (m, 2H), 5.15-5.19 (m, 1H), 7.00-7.05 (m, 2H), 7.31 (d, J=5.4 Hz, 2H), 7.56 (d, J=7.5 Hz, 1H), 7.62-7.68 (m, 1H), 8.54 (d, J=5.4 Hz, 2H).

1. stirringThe reaction was stirred at room temperature for 1 h
2. custompurified by preparative LCMS