(2R,3R,4R,5S)-3,4-Bis-methoxymethoxy-2-trityloxymethyl-5-vinyl-pyrrolidine-1-carboxylic acid tert-butyl ester                                                                                                                                                              在
                                                                                                                                                                                 sodium tetrahydroborate   、                                                                                                  
臭氧                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 (2S,3R,4R,5R)-2-Hydroxymethyl-3,4-bis-methoxymethoxy-5-trityloxymethyl-pyrrolidine-1-carboxylic acid tert-butyl ester