butyl(phenylmethoxymethyl)tin   、                                                                                      
(2S,3R)-N-methoxy-2-[4-[(2S,3R)-3-[methoxy(methyl)carbamoyl]-1,4-dioxaspiro[4.4]nonan-2-yl]furan-3-yl]-N-methyl-1,4-dioxaspiro[4.4]nonane-3-carboxamide                                                                                                                                                              在
                                                                                                                                                                                 
正丁基锂                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以100%的产率得到2-phenylmethoxy-1-[(2S,3R)-2-[4-[(2S,3R)-3-(2-phenylmethoxyacetyl)-1,4-dioxaspiro[4.4]nonan-2-yl]furan-3-yl]-1,4-dioxaspiro[4.4]nonan-3-yl]ethanone