7-chloro-4-methoxy-1H-indole-2-carboxylic Acid 在
N-[(dimethylamino)-1H-1,2,3-triazolo[4,5-b]pyridine-1-ylmethylene]-N-methylmethanaminium hexafluorophosphate N-oxide 、
N,N-二异丙基乙胺 作用下,
以
二氯甲烷 为溶剂,
以50 mg的产率得到(S)-methyl 2-((1R,2S,5S)-3-(7-chloro-4-methoxy-1H-indole-2-carbonyl)- 6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamido)-3-((S)-2-oxopyrrolidin-3-yl)propanoate