3-[(4S)-4-ethyl-2-oxo-1,3-dioxolan-4-yl]propanal 、
methyl 3-benzyl-2,3,4,5,6,11-hexahydro-1H-azocino[4,5-b]indole-1-carboxylate 以
甲苯 为溶剂,
以88%的产率得到methyl 4-benzyl-1,2,3,4,4a,5,6,8-octahydro-5-[(2S)-2-ethyl-2,3-(carbonyldioxy)-propyl]-pyrido[2,3-d]carbazol-7-carboxylate