(1R,2S)-1-amino-N-(cyclopropylsulfonyl)-2-vinylcyclopropanecarboxamide 、
(3S,13R,15S,E)-13-(biphenyl-4-yl)-3-(tert-butoxycarbonylamino)-2-oxo-12-thia-1-azabicyclo[11.2.1]hexadec-9-ene-15-carboxylic acid 在
对甲苯磺酸 、
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
二氯甲烷 为溶剂,
以52.5%的产率得到tert-butyl (3S,13R,15S,E)-13-(biphenyl-4-yl)-15-((1R,2S)-1-(cyclopropylsulfonylcarbamoyl)-2-vinylcyclopropylcarbamoyl)-2-oxo-12-thia-1-azabicyclo[11.2.1]hexadec-9-en-3-ylcarbamate