反应详情

N-[(3aS,4S,6aR)-2-benzyloctahydrocyclopenta[c]pyrrol-4-yl]-2,2-dicyclohexylacetamide (2.65 g, 6.27 mmol) from Example 15 and methanol (60 mL) were added to 20% palladium hydroxide on carbon (wet, 0.530 g, 3.77 mmol) in a 250 mL pressure bottle. The reaction was stirred for 16 hours under hydrogen (30 psi) at room temperature. The mixture was filtered through a nylon membrane and the solvent removed in vacuo. The crude material was chromatographed on a silica gel cartridge (Analogix®, Burlington, Wis., RS25-25) eluting with 1-10% methanol (2 N ammonia)/dichloromethane to give the title compound: 1H NMR (500 MHz, pyridine-d5) δ ppm 7.97 (d, J=7.1, 1H), 4.57 (dt, J=7.0, 13.8, 1H), 3.03 (dd, J=3.2, 10.1, 1H), 2.89 (dd, J=7.8, 9.7, 1H), 2.78 (dd, J=7.4, 10.1, 1H), 2.71 (ddd, J=3.2, 7.5, 16.7, 1H), 2.58 (dd, J=3.2, 9.8, 1H), 2.50-2.39 (m, J=8.3, 1H), 1.98-1.89 (m, 3H), 1.89-1.80 (m, 3H), 1.79-1.67 (m, J=6.4, 14.9, 7H), 1.66-1.56 (m, 3H), 1.49-1.36 (m, 2H), 1.36-1.28 (m, 1H), 1.28-1.02 (m, 8H); MS (ESI+) m/z 333 (M+H)+.

1. filtrationThe mixture was filtered through a nylon membrane
2. customthe solvent removed in vacuo
3. customThe crude material was chromatographed on a silica gel cartridge (Analogix®, Burlington, Wis., RS25-25)
4. washeluting with 1-10% methanol (2 N ammonia)/dichloromethane