methyl 3-benzyl-1,2,3,4,5,6-hexahydroazepino[4,5-b]indole-5-carboxylate 、
4-(1,3-dioxolan-2-yl)-6-[N-(tBOC)-N-methylamino]hexan-1-al 反应 0.5h,
以93%的产率得到(3aR,4S,11bS)-3-Benzyl-4-[4-(tert-butoxycarbonyl-methyl-amino)-2-[1,3]dioxolan-2-yl-butyl]-2,3,3a,4,5,7-hexahydro-1H-pyrrolo[2,3-d]carbazole-6-carboxylic acid methyl ester