methyl (-)-(E)-4-[(3aS,4S,7R,7aS)-7-hydroxy-2,2-dimethyl-7-((4R,5S,E)-4-methyl-5-(triethylsilyloxy)hex-2enyl)tetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-4-yl]-3-methylbut-2-enoate                                                                                                                                                              在
                                                                                                                                                                                 
四丁基氟化铵                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 984.0h,
                                                                                                                以84%的产率得到methyl (E)-4-[(3aS,4S,7R,7aS)-7-hydroxy-7-((4R,5S,E)-5-hydroxy-4-methylhex-2enyl)-2,2-dimethyltetrahydro-3aH-[1,3]dioxolo[4,5-c]pyran-4-yl]-3-methylbut-2-enoate