乙酸酐   、                                                                                      
Methyl 6-Deoxy-4-O-methyl-6-phenylphosphonoyl-D-fructofuranoside                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 1,3,5-Tri-O-acetyl-6-deoxy-4-O-methyl-6-<(S)-phenylphosphonoyl>-β-D-fructofuranose   、                                                                                             1,3,5-Tri-O-acetyl-6-deoxy-4-O-methyl-6-<(S)-phenylphosphonoyl>-α-D-fructofuranose   、                                                                                             1,3,5-Tri-O-acetyl-6-deoxy-4-O-methyl-6-<(R)-phenylphosphonoyl>-β-D-fructofuranose   、                                                                                             1,3,5-Tri-O-acetyl-6-deoxy-4-O-methyl-6-<(R)-phenylphosphonoyl>-α-D-fructofuranose