2-chloro-5-(p-tolylsulfonylmethyl)tetrahydrofuran   、                                                                                      
O,O’-双(三甲基硅烷)-5-氟尿嘧啶                                                                                                                                                                                                                                                                                                          生成                                                 Toluene-4-sulfonic acid (2S,5S)-5-(5-fluoro-4-hydroxy-2-oxo-2H-pyrimidin-1-yl)-tetrahydro-furan-2-ylmethyl ester   、                                                                                             Toluene-4-sulfonic acid (2R,5S)-5-(5-fluoro-4-hydroxy-2-oxo-2H-pyrimidin-1-yl)-tetrahydro-furan-2-ylmethyl ester