(4S,6R)-4-[(R)-2-(tert-butyl-dimethyl-silanyloxy)-4-(tert-butyl-diphenyl-silanyloxy)-butyl]-6-[(1S,2S)-2-(tert-butyl-dimethyl-silanyloxy)-4-(3,4-dimethoxy-benzyloxy)-1-methyl-butyl]-[1,3]dioxan-2-one                                                                                                                                                              在
                                                                                                                                                                                 
potassium carbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 5.0h,
                                                                                                                以85%的产率得到(3S,4S,5R,7S,9R)-3,9-bis-(tert-butyl-dimethyl-silanyloxy)-11-(tert-butyl-diphenyl-silanyloxy)-1-(3,4-dimethoxy-benzyloxy)-4-methyl-undecane-5,7-diol