反应详情

To a stirred solution of 10-amino-2-(4-(4-fluorobenzyl)-1H-imidazol-2-yl)-3-hydroxy-7,8,9,10-tetrahydro-7,10-ethanopyrimido[1,2-a]azepin-4(6H)-one, Example 1 (27 mg, 0.068 mmol) and 2-(dimethylamino)-2-oxoacetic acid (11.99 mg, 0.102 mmol) in DMF (3 mL) was added N,N-diisopropylethylamine (0.061 mL, 0.35 mmol), DMAP (1.668 mg, 0.014 mmol) and HATU (38.9 mg, 0.102 mmol) and the resulting mixture stirred at room temp for 3 h. The mixture was then concentrated and purified by preparative HPLC to afford the title compound (6 mg, 8% yield) as an off-white solid. 1H NMR (500 MHz, CDCl3) δ ppm 1.63-1.77 (m, 2H), 1.93-1.98 (m, 2H), 2.29-2.38 (m, 4H), 2.50 (br. s., 1H), 3.00 (s, 3H), 3.17 (s, 3H), 4.03 (s, 2H), 4.14 (s, 2H), 6.82 (br. s., 1H), 7.00 (t, J=8.39 Hz, 1H), 7.21-7.27 (m, 3H), 7.70 (s, 1H). LCMS (M+H)=495.20.

1. concentrationThe mixture was then concentrated
2. custompurified by preparative HPLC