(2R,3R,4S,6S)-2,3-Bis-benzyloxy-6-benzyloxymethyl-5-methylene-tetrahydro-pyran-4-ol   、                                                                                      ((2S,3R,4S,5R,6R)-4,5-Bis-benzyloxy-6-benzyloxymethyl-2-phenylselanyl-tetrahydro-pyran-3-yloxy)-chloro-dimethyl-silane                                                                                                                                                              在
                                                                                                                                                                                 
咪唑                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                生成                                                 ((2R,3R,4S,6S)-2,3-Bis-benzyloxy-6-benzyloxymethyl-5-methylene-tetrahydro-pyran-4-yloxy)-((2S,3R,4S,5R,6R)-4,5-bis-benzyloxy-6-benzyloxymethyl-2-phenylselanyl-tetrahydro-pyran-3-yloxy)-dimethyl-silane