2-(trimethylsilyloxy)pyridine   、                                                                                      
α-D-1,3,5-tri-O-benzoyl-2-O-[3-(trifluoromethyl)benzoyl]ribofuranose                                                                                                                                                              在
                                                                                                                                                                                 
四氯化锡                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                                                        以94%的产率得到(2R,3R,4R,5R)-4-(benzoyloxy)-5-((benzoyloxy)methyl)-2-(2-oxopyridin-1(2H)-yl)tetrahydrofuran-3-yl 3-(trifluoromethyl)benzoate