(R)-3-(methylsulfonyloxy)-5-(1-phenylethylcarbamoyl)benzoic acid 、 (2S,4S,5S)-5-amino-6-benzyloxy-4-hydroxy-2-isopropyl-hexanoic acid ((S)-1-benzylcarbamoyl-2-methyl-propyl)amide 在
二异丙胺 、 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 0.11h,
以23%的产率得到methanesulphonic acid 3-[(1S,2S,4S)-4-((S)-1-benzylcarbamoyl-2-methyl-propylcarbamoyl)-1-benzyloxymethyl-2-hydroxy-5-methyl-hexylcarbamoyl]-5-((R)-1-phenyl-ethylcarbamoyl)-phenyl ester