(S)-3-Benzyl-1-(3-cyclopentyloxy-4-methoxy-phenyl)-piperazine 、
异氰酸乙酯 在
silica gel 、
ethyl acetate n-hexane 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以75% EtOAc/hexane as eluant to afford the title compound as a foam (60 mg, 69%) 1H NMR (CDCl3) 7.35-7.22 (m, 5H), 6.78 (d, J=8.8, 1H), 6.49 (br s, 1H), 6.40 (br d, J=7.5, 1H), 4.73-4.70 (m, 1H), 4.27-4.13 (m, 2H), 3.93 (br d, J=12.5, 1H), 3.79 (s, 3H), 3.43-3.00 (m, 7H), 2.75-2.67 (m, 2H), 1.96-1.91 (m, 2H), 1.90-1.79 (m, 3H), 1.64-1.59 (m, 2H), 1.04 (t, J=7.2, 3H)的产率得到(S)-2-Benzyl-4-(3-cyclopentyloxy-4-methoxy-phenyl)-piperazine-1-carboxylic acid ethylamide