、
N,N'-diacetylchitobiosamine 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-) 作用下,
以
二甲基亚砜 、
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
以72%的产率得到(2S)-N-[(2S)-1-[(2R)-1-[(2S)-5-carbamimidamido-1-[(2S)-2-[N-[2-[(2S)-1-[2-(ethyldisulfanyl)phenoxy]-5-hydroxy-5-imino-1-oxopentan-2-yl]imino-2-hydroxyethyl]-C-hydroxycarbonimidoyl]pyrrolidin-1-yl]-1-oxopentan-2-yl]imino-1-hydroxy-3-[(1-hydroxyethylideneamino)methylsulfanyl]propan-2-yl]imino-1,3-dihydroxypropan-2-yl]-2-[[2-[[(2S)-5-carbamimidamido-2-[[[(4R)-3-(9H-fluoren-9-ylmethoxycarbonyl)-1,3-thiazolidin-4-yl]-hydroxymethylidene]amino]-1-hydroxypentylidene]amino]-1-hydroxyethylidene]amino]-N'-[(2R,3R,4R,5S,6R)-5-[(2S,3R,4R,5S,6R)-4,5-dihydroxy-3-(1-hydroxyethylideneamino)-6-(hydroxymethyl)oxan-2-yl]oxy-4-hydroxy-3-(1-hydroxyethylideneamino)-6-(hydroxymethyl)oxan-2-yl]butanediimidic acid