(3R)-azido-(6S)-(3-iodo-but-(2E)-enyl)-(2R,5S)-dimethyl-tetrahydropyran                                                                                                                                                              在
                                                                                                                                                                                 Schwartz's reagent   、                                                                                                  
三甲基膦                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 7.17h,
                                                                                                                生成                                                 (2R,3R,5S,6S)-6-[(2E,4E)-5-((3R,4R,5R,7R)-7-Iodomethyl-4-triethylsilanyloxy-1,6-dioxa-spiro[2.5]oct-5-yl)-3-methyl-penta-2,4-dienyl]-2,5-dimethyl-tetrahydro-pyran-3-ylamine