(R)-4-[3-((S)-4-hydroxy-6-aza-spiro[2.5]oct-6-yl)-propyl]-2-methyl-[1,4]diazepan-5-one dihydrochloride 、
5-chloro-2-fluorophenyl isocyanate 在
三乙胺 作用下,
以
二氯甲烷 为溶剂,
以48%的产率得到(R)-4-[3-((S)-4-hydroxy-6-aza-spiro[2.5]oct-6-yl)-propyl]-2-methyl-5-oxo-[1,4]diazepane-1-carboxylic acid (5-chloro-2-fluoro-phenyl)-amide