(1→6)-linked C-glycosidic disaccharides is presented. The key reaction is a Pd-catalyzed coupling of 1-iodo- or 1-triflato-glycals with alkynyl glycosides. Reinstallation of the native hydroxyl group pattern is achieved after selective hydrogenation of the triple bond using Raney-nickel. Epoxidation with DMDO and reductive epoxide opening gives access to either the α- or the β-derivative, depending on the hydride
                                    提出了一种灵活而鲁棒的组装(1→6)连接的C-糖苷二糖的方法。关键反应是Pd催化的1-
碘-或1-triflato-糖与炔基糖苷的偶联。使用阮内
镍对三键进行选择性加氢后,可以重新安装天然羟基图案。取决于
氢化物的来源,使用
DMDO和还原性环氧化合物进行的环氧化作用可接触到α或β衍
生物。