(3S,4S,5S)-3,4-dibenzyloxy-5-benzyloxymethyl-1-pyrroline-N-oxide   、                                                                                      
(3aS,4R,6aR)-4-ethynyl-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxole                                                                                                                                                              在
                                                                                                                                                                                 
copper(l) iodide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                    反应 5.25h,
                                                                                                                以72%的产率得到(2S,3S,4S)-3,4-bis(benzyloxy)-2-(benzyloxymethyl)-6-[(3aR,6R,6aS)-tetrahydro-2,2-dimethylfuro[3,4-d][1,3]dioxol-6-yl]-1-azabicyclo[3.2.0]heptan-7-one