(S)-3-benzenesulfonyl-1-phenethylallylamine tosylate 、
(2S)-4-methyl-2-(morpholine-4-carbonylamino)-4-[2-[3-[3-oxo-3-[3-(2-oxopyrrolidin-1-yl)propylamino]propyl]spiro[1,2,4-trioxolane-5,2'-adamantane]-3-yl]ethoxycarbonyloxy]pentanoic acid 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
N,N-二甲基甲酰胺 为溶剂,
反应 2.0h,
以36%的产率得到[(4S)-5-[[(3S)-1-(benzenesulfonyl)-5-phenylpent-1-en-3-yl]amino]-2-methyl-4-(morpholine-4-carbonylamino)-5-oxopentan-2-yl] 2-[3-[3-oxo-3-[3-(2-oxopyrrolidin-1-yl)propylamino]propyl]spiro[1,2,4-trioxolane-5,2'-adamantane]-3-yl]ethyl carbonate