、 3-amino-2-hydroxy-hexanoic acid allylamide hydrochloride 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
二氯甲烷 为溶剂,
反应 18.0h,
以65%的产率得到(1R,2S,5S)-3-[(2S)-2-[[(2S)-1-[(2-tert-butyl-3,4-dioxocyclobuten-1-yl)-methylamino]-3,3-dimethylbutan-2-yl]carbamoylamino]-2-cyclohexylacetyl]-N-[2-hydroxy-1-oxo-1-(prop-2-enylamino)hexan-3-yl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide