反应详情

To a solution of benzyl(3-(benzyloxy)-2-(hydrazinylcarbonyl)-4-oxo-6,7,8,9-tetrahydro-7,10-ethanopyrimido[1,2-a]azepin-10(4H)-yl)carbamate, Intermediate 9 (400 mg, 0.794 mmol) in CH2Cl2 (15 mL) at 0° C. was added triethylamine (0.221 mL, 1.589 mmol) followed by 2-(4-fluorophenyl)acetyl chloride (0.098 mL, 0.715 mmol) and the resulting mixture stirred for 1 h. The mixture was allowed to warm to room temp and stirred for 3 h. The mixture was then concentrated and purified by preparative HPLC to afford the title compound (70 mg, 0.109 mmol, 13.78% yield) as a white solid. 1H NMR (500 MHz, CDCl3) δ ppm 10.00 (1H, br. s.), 8.35 (1H, br. s.), 7.48-7.53 (2H, m), 7.27-7.38 (10H, m), 7.00-7.07 (2H, m), 6.55 (1H, br. s.), 5.39 (2H, s), 5.05 (2H, s), 4.10 (2H, d, J=3.36 Hz), 3.60 (2H, s), 2.56-2.70 (2H, m), 2.47 (1H, br. s.), 1.88-2.04 (4H, m), 1.59-1.71 (2H, m). LCMS (M+H)=640.35.

1. stirringstirred for 3 h
2. concentrationThe mixture was then concentrated
3. custompurified by preparative HPLC