反应详情

(±)-9H-Fluoren-9-ylmethyl [1-(1H-indol-3-ylmethyl)-1-methyl-2-oxo-2-[(2-phenylethyl)amino]ethyl]carbamate (10 g, 18.4 mmol) was dissolved in a 20% piperidine in DMF solution (50 mL) and stirred for 12 hours at room temperature. The solvent was removed in vacuo and chromatographed over silica gel using CH2Cl2 then 5% MeOH:95% CH2Cl2 as eluants. The title compound was crystallized from ethyl acetate (4.73 g, 80%), mp 106°-110° C. (EtOAc); IR (film) 1646 cm-1 ; NMR (CDCl3) δ1.39 (3H, s), 2.56-2.74 (2H, m), 2.82 (1H, d, J 14Hz), 3.28-3.40 (1H, m), 3.48 (1H, d, J 14Hz), 3.44-3.53 (1H, m), 7.1-7.7 (11H, m), 8.3 (1H, s); Anal. (C20H23N3O) C, H, N.

1. customThe solvent was removed in vacuo
2. customchromatographed over silica gel
3. customThe title compound was crystallized from ethyl acetate (4.73 g, 80%), mp 106°-110° C. (EtOAc)