8-cyclohexyl-12-methoxy-5-(methoxycarbonyl)-1,12b-dihydrocyclopropa[d]indolo[2,1-a][2]benzazepine-1a(2H)-carboxylic acid 、
2,6-dimethylpiperazine 在
O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以85%的产率得到methyl 8-cyclohexyl-1a[((3R,5S)-3,5-dimethyl-1-piperazinyl)carbonyl]-12-methoxy-1,1a,2,12b-tetrahydrocyclopropa[d]indolo[2,1,-a][2]benzazepine-5-carboxylate