在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
生成
(6S,9S)-4-[2-(1H-indol-3-yl)ethyl]-9,10-dimethyl-1-(2-methylpropyl)-6-(6-oxooctyl)-1,4,7,10-tetrazacyclotridecane-2,5,8,11-tetrone