(E)-3-[(2R,3S)-3-Allyloxycarbonylamino-1-[(S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-propionyl]-5-(2-methoxy-ethoxymethoxy)-2,3-dihydro-1H-indol-2-yl]-acrylic acid ethyl ester 在
哌啶 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
生成 [(1S,3S,10S,10aR)-10-Allyloxycarbonylamino-8-(2-methoxy-ethoxymethoxy)-3-methyl-4-oxo-1,2,3,4,10,10a-hexahydro-pyrazino[1,2-a]indol-1-yl]-acetic acid ethyl ester 、 [(1R,3S,10S,10aR)-10-Allyloxycarbonylamino-8-(2-methoxy-ethoxymethoxy)-3-methyl-4-oxo-1,2,3,4,10,10a-hexahydro-pyrazino[1,2-a]indol-1-yl]-acetic acid ethyl ester