3-<(1R,2S)-2-<(2,2-dichloro-(4E)-hexenoyloxy)ethoxy>-7,7-dimethylbicyclo<2.2.1>heptane-1-carbonyl>-2-oxazolone 在
tris(triphenylphosphine)ruthenium(II) chloride 作用下,
以
苯 为溶剂,
反应 168.0h,
以56%的产率得到(1R,6R,13S,15S,19R)-7-[(E)-but-2-enyl]-7,19-dichloro-18,18-dimethyl-5,9,12-trioxa-3-azatetracyclo[13.2.1.13,6.01,13]nonadecane-2,4,8-trione