13-cyclohexyl-6,7-dihydropyrido[2',3':6,7][1,4]oxazepino[4,5-a]indole-10-carboxylic acid 、
(E)-methyl 3-(4-(1-aminocyclopentanecarboxamido)phenyl)acrylate 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,
生成 methyl (E)-3-[4-[[1-[(18-cyclohexyl-8-oxa-3,11-diazatetracyclo[9.7.0.02,7.012,17]octadeca-1(18),2(7),3,5,12(17),13,15-heptaene-14-carbonyl)amino]cyclopentanecarbonyl]amino]phenyl]prop-2-enoate