2-[[(1R,2S,4S)-1-(3-acetyl-2-oxoimidazole-1-carbonyl)-7,7-dimethyl-2-bicyclo[2.2.1]heptanyl]oxy]ethyl (E)-2,2-dichlorohex-4-enoate 在
tris(triphenylphosphine)ruthenium(II) chloride lanthanum(lll) triflate 作用下,
以
甲苯 为溶剂,
反应 48.0h,
以64%的产率得到(1R,6R,13S,15S,19R)-5-acetyl-7-[(E)-but-2-enyl]-7,19-dichloro-18,18-dimethyl-9,12-dioxa-3,5-diazatetracyclo[13.2.1.13,6.01,13]nonadecane-2,4,8-trione