(1R,2S)-N-trifluoroacetamido-cispentacin 、 在
N,N-二异丙基乙胺 、
3-(二乙氧基邻酰氧基)-1,2,3-苯并三嗪-4-酮 作用下,
以
四氢呋喃 为溶剂,
反应 12.5h,
以68%的产率得到(S)-1-((2R,3R,4R,6S)-3-(ethanoyloxy)-4-hydroxy-6-((S)-2-methoxy-2-oxo-1-((1R,2S)-2-(2,2,2-trifluoroethanamido)cyclopentanecarboxamido)ethyl)-2-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydro-2H-pyran-4-yl)ethane-1,2-diyl diethanoate