伯吉斯试剂   、                                                                                                                                                                                                                                                                                    以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以42%的产率得到methyl (1R,3R,4R,5S,9R)-4-((tert-butyldimethylsilyl)oxy)-1-(((tert-butyldimethylsilyl)oxy)methyl)-9-methyl-3-(3-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)-2,6-dioxa-7-thia-8-azaspiro[4.5]decane-8-carboxylate 7,7-dioxide