4-Methyl-6-phenyl-2-trimethylsilanylsulfanyl-nicotinonitrile   、                                                                                      
2,3,4,6-四乙酰氧基-alpha-D-吡喃葡萄糖溴化物                                                                                                                                                              在
                                                                                                                                                                                 
四氯化锡                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 Acetic acid (2R,3R,4S,5R,6R)-4,5-diacetoxy-6-acetoxymethyl-2-(3-cyano-4-methyl-6-phenyl-2-thioxo-2H-pyridin-1-yl)-tetrahydro-pyran-3-yl ester