(1R, 2S)-1-amino-N-(1-methylcyclopropylsulfonyl)-2-vinylcyclopropanecarboxamide 、
(2'S,3R)-5-methyl-1'-[(2S)-2-[(2-methylpropan-2-yl)oxycarbonylamino]non-8-enoyl]-9-(trifluoromethoxy)spiro[1,2-dihydropyrano[2,3-c]quinoline-3,4'-pyrrolidine]-2'-carboxylic acid 在
N-[(dimethylamino)-1H-1,2,3-triazolo-[4,5-b]pyridin-1-ylmethylene]-N-methylmethanaminium hexafluorophosphate N-oxide 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以770 mg的产率得到tert-butyl N-[(2S)-1-[(2'S,3R)-2'-[[(1R,2S)-2-ethenyl-1-[(1-methylcyclopropyl)sulfonylcarbamoyl]cyclopropyl]carbamoyl]-5-methyl-9-(trifluoromethoxy)spiro[1,2-dihydropyrano[2,3-c]quinoline-3,4'-pyrrolidine]-1'-yl]-1-oxonon-8-en-2-yl]carbamate