prop-2-enyl (2S,5R,6R)-6-amino-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 、
Cbz-L-羟脯氨酸 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 16.0h,
以65%的产率得到(2S,4R)-benzyl 2-{(2S,5R,6R)-2-but-3-enoyl-3,3-dimethyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]heptan-6-ylcarbamoyl}-4-hydroxypyrrolidine-1-carboxylate