、
(2S,4R)-2-methyl-6-oxopiperidine-4-carboxylic acid 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,
以16.6 mg的产率得到(4R,6S)-4-((R)-3-((4-bromo-2-((S)-3-methylpiperidine-1-carbonyl)-6-nitrophenyl)amino)piperidine-1-carbonyl)-6-methylpiperidin-2-one