N-[(methyloxy)carbonyl]-L-valyl-4,4 difluoro-L-proline 、
methyl {(1S)-2-methyl-1-[((8S)-8-{[(3,3",4"-triamino-1,1':4',1"-terphenyl-4-yl)amino]carbonyl}-1,4-dioxa-7-azaspiro[4.4]non-7-yl)carbonyl]propyl}carbamate 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-) 、
溶剂黄146 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 4.5h,
以21%的产率得到methyl [(1S)-1-({(2S)-4,4-difluoro-2-[5-(4-{2-[(8S)-7-((2S)-3-methyl-2-{[(methyloxy)carbonyl]amino}butanoyl)-1,4-dioxa-7-azaspiro[4.4]non-8-yl]-1H-benzimidazol-5-yl}phenyl)-1H-benzimidazol-2-yl]-1-pyrrolidinyl}carbonyl)-2-methylpropyl]carbamate