(3R,4S)-1-benzoyl-3-O-triisopropylsilyloxy-4-(o-allyloxyphenyl)azetidin-2-one 在
RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 氟化氢吡啶 、
lithium hexamethyldisilazane 作用下,
以
四氢呋喃 、
二氯甲烷 为溶剂,
反应 3.0h,
生成 [(1S,4E,14S,15R,18S,20S,23R,25S,26S,28R,31R,32S)-23-acetyloxy-14-benzamido-15,20,26-trihydroxy-21,21,25,33-tetramethyl-3,16,24-trioxo-2,7,17,29-tetraoxahexacyclo[18.10.2.118,22.01,28.08,13.025,31]tritriaconta-4,8,10,12,22(33)-pentaen-32-yl] benzoate