、
(1S,3S,4S,5R,6S,7S)-4,5-bis(benzyloxy)-7-((1S,3S,4S,5R,6S,7S)-4,5-bis(benzyloxy)-7-(tert-butoxycarbonylamino)-2-oxabicyclo[4.1.0]heptane-3-carboxamido)-2-oxabicyclo[4.1.0]heptane-3-carboxylic 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
二氯甲烷 、
N,N-二甲基甲酰胺 为溶剂,
反应 16.0h,
以32 mg的产率得到(1S,3S,4S,5R,6S,7S)-methyl 4,5-bis(benzyloxy)-7-((1S,3S,4S,5R,6S,7S)-4,5-bis(benzyloxy)-7-((1S,3S,4S,5R,6S,7S)-4,5-bis(benzyloxy)-7-((1S,3S,4S,5R,6S,7S)-4,5-bis(benzyloxy)-7-(tert-butoxycarbonylamino)-2-oxabicyclo[4.1.0]heptane-3-carboxamido)-2-oxabicyclo[4.1.0]heptane-3-carboxamido)-2-oxabicyclo[4.1.0]heptane-3-carboxamido)-2-oxabicyclo[4.1.0]heptane-3-carboxylate