(1R,3S)-1-(2-Hydroxy-2-methyl-propyl)-7-methoxy-2-[(S)-1-(2,2,2-trichloro-ethoxycarbonyl)-pyrrolidine-2-carbonyl]-2,3,4,9-tetrahydro-1H-β-carboline-3-carboxylic acid ethyl ester 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
氯仿 为溶剂,
反应 48.0h,
以67%的产率得到(1R,3R)-1-(2-Hydroxy-2-methyl-propyl)-7-methoxy-2-[(S)-1-(2,2,2-trichloro-ethoxycarbonyl)-pyrrolidine-2-carbonyl]-2,3,4,9-tetrahydro-1H-β-carboline-3-carboxylic acid ethyl ester