(2R,3R,4S,5S)-4-<(1S)-1-(ethoxycarbonyl)ethyl>-2,3-(isopropylidenedioxy)-5-<(1R)-1,2-(isopropylidenedioxy)ethyl>-4-vinyltetrahydrofuran                                                                                                                                                              在
                                                                                                                                                                                 lithium aluminium tetrahydride                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 
(2R,3R,4S,5S)-4-<(1S)-1-(hydroxymethyl)ethyl>-2,3-(isopropylidenedioxy)-5-<(1R)-1,2-(isopropylidenedioxy)ethyl>-4-vinyltetrahydrofuran