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