反应详情

To N1-{(3aS,4R,6aR)-2-[3-(trifluoromethyl)benzyl]octahydrocyclopenta[c]pyrrol-4-yl}-L-leucinamide (113 mg, 0.284 mmol) from Example 170 Step B in dichloromethane (0.5 mL) was added 2-isocyanato-2-methylpropane (35.1 μL, 0.313 mmol) and the reaction mixture was stirred at room temperature overnight. The reaction was reduced in volume and loaded onto a silica gel cartridge (Analogix®, Burlington, Wis., RS-12). The title compound was eluted with a gradient of 0% to 10% methanol (2 N ammonia)/dichloromethane over 20 minutes: 1H NMR (500 MHz, pyridine-d5) δ ppm 8.74 (d, J=8.3, 1H), 7.73 (s, 1H), 7.57 (d, J=9.5, 2H), 7.44 (t, J=7.7, 1H), 6.56 (d, J=8.6, 1H), 6.33 (s, 1H), 4.88 (td, J=5.6, 8.9, 1H), 4.41-4.33 (m, 1H), 3.56 (d, J=13.5, 1H), 3.41 (d, J=13.6, 1H), 2.71 (dd, J=1.7, 9.2, 1H), 2.55-2.45 (m, 2H), 2.35 (dd, J=6.9, 8.9, 1H), 2.29-2.20 (m, 2H), 2.11 (dq, J=6.1, 12.1, 1H), 1.92-1.77 (m, 3H), 1.73-1.64 (m, 2H), 1.44 (s, 9H), 1.43-1.35 (m, 1H), 0.85 (d, J=3.3, 3H), 0.84 (d, J=3.2, 3H); MS (ESI+) m/z 497 (M+H)+.

1. washThe title compound was eluted with a gradient of 0% to 10% methanol (2 N ammonia)/dichloromethane over 20 minutes