(2R,4S,5S)-5-[[(2S)-2-amino-3,3-dimethylbutanoyl]amino]-6-[4-[6-(dimethylamino)pyridin-3-yl]phenyl]-N-[(3S,4S)-6-fluoro-3-hydroxy-3,4-dihydro-2H-chromen-4-yl]-2-[(2-fluorophenyl)methyl]-4-hydroxyhexanamide 、
1-氰基-1-环丙烷羧酸 在
三乙胺 、 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,
反应 1.0h,
以59%的产率得到1-cyano-N-[(2S)-1-[[(2S,3S,5R)-1-[4-[6-(dimethylamino)pyridin-3-yl]phenyl]-6-[[(3S,4S)-6-fluoro-3-hydroxy-3,4-dihydro-2H-chromen-4-yl]amino]-5-[(2-fluorophenyl)methyl]-3-hydroxy-6-oxohexan-2-yl]amino]-3,3-dimethyl-1-oxobutan-2-yl]cyclopropane-1-carboxamide