13-cyclohexyl-6,7-dihydro-5,6-dihydroxy-(5S,6R/5R,6S)-5H-pyrido[3',2':3,4]azepino[1,2-a]indole-10-carboxylic acid 、
(E)-methyl 3-(4-(1-aminocyclopentanecarboxamido)phenyl)acrylate 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
DMF (N,N-dimethyl-formamide) 为溶剂,
反应 0.25h,
以50%的产率得到(5S,6R/5R,6S)-3-[4-[[[1-[[[13-cyclohexyl-6,7-dihydro-5,6-dihydroxy-5H-pyrido[3',2':3,4]azepino[1,2-a]indol-10-yl]carbonyl]amino]cyclopentyl]carbonyl]amino]phenyl]-(2E)-2-propenoic acid methyl ester