6-aminopenicillanic acid trimethylsilyl ester 、
(R)-2-acetoxy-1-((3aR,5R,6S,6aR)-6-(acryloyloxy)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-5-yl)ethyl 4-chloro-4-oxobutanoate 在
三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 10.0h,
以0.23 g的产率得到(2S,5R,6R)-6-(4-((R)-2-acetoxy-1-((3aR,5R,6S,6aR)-6-(acryloyloxy)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-5-yl)ethoxy)-4-oxobutanamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid