prop-2-enyl N-[2-[2-[tert-butyl(dimethyl)silyl]oxyethyl]-3-phenylmethoxy-5-(phenylmethoxymethoxymethyl)phenyl]carbamate   、                                                                                      
(4S,5R)-4-(tert-Butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl-5-trifluoromethanesulfonyloxymethyl-oxazolidine-3-carboxylic acid 2,2,2-trichloro-ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 sodium hydride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃   、                                                                                         paraffin                                                                                  为溶剂,
                                                                                                                                                                                        以99%的产率得到(4S,5S)-5-[(Allyloxycarbonyl-{3-benzyloxy-5-benzyloxymethoxymethyl-2-[2-(tert-butyl-dimethyl-silanyloxy)-ethyl]-phenyl}-amino)-methyl]-4-(tert-butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl-oxazolidine-3-carboxylic acid 2,2,2-trichloro-ethyl ester