(S)-2-(((S)-1-(4-bromophenyl)-2,2,2-trifluoroethyl)amino)-4-methylpentanoic acid 、 (3R,3aR,6S,6aS)-6-fluoro-3-hydroxy-hexahydro-furo[3,2-b]pyrrol-4-ium chloride 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
N,N-二甲基甲酰胺 为溶剂,
以53%的产率得到(S)-2-[(S)-1-(4-bromo-phenyl)-2,2,2-trifluoro-ethylamino]-1-((3R,3aR,6S,6aS)-6-fluoro-3-hydroxy-hexahydro-furo[3,2-b]pyrrol-4-yl)-4-methyl-pentan-1-one