1,2:3,4-二-O-异亚丙基-α-D-半乳糖-己二醛-1,5-吡喃糖   、                                                                                      
1-(3-nitrophenyl)-2-(triphenylphosphoranylidene)ethanone                                                                                                                                                                                              以
                                                                                         
氯仿                                                                                  为溶剂,
                                                                                                                                                    反应 5.0h,
                                                                                                                以60%的产率得到(E)-1-(3-Nitro-phenyl)-3-((3aR,5R,5aS,8aS,8bR)-2,2,7,7-tetramethyl-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran-5-yl)-propenone