(1aR,2S,3R,3aS,4R,5S,7aR,7bS)-5-[2-(tert-butyldiphenylsilanyloxy)ethyl]-2-hydroxymethyl-4-triethylsilanyloxy-1a,2,3,3a,4,5,7a,7b-octahydro-1-oxacyclopropa[a]naphthalene-3-carboxylic acid methoxymethylamide   、                                                                                      
碘甲烷                                                                                                                                                              在
                                                                                                                                                                                 sodium hydride                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以65%的产率得到(1aR,2S,3R,3aS,4R,5S,7aR,7bS)-5-[2-(tert-butyldiphenylsilanyloxy)ethyl]-2-methoxymethyl-4-triethylsilanyloxy-1a,2,3,3a,4,5,7a,7b-octahydro-1-oxacyclopropa[a]naphthalene-3-carboxylic acid methoxymethylamide