Acetic acid (2S,3R,4S,5aS,6aR,8R,10S,11R,12aS,13aR)-3-acetoxy-2,11-bis-(2-benzyloxy-ethyl)-4,6a,8-trimethyl-tetradecahydro-1,6,12-trioxa-cyclohepta[4,5]benzo[1,2]cycloocten-10-yl ester   、                                                                                      
叔丁基二苯基氯硅烷                                                                                                                                                              在
                                                                                                                                                                                 
咪唑                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 24.0h,
                                                                                                                以82%的产率得到(2S,3R,4S,5aS,6aR,8R,10S,11R,12aS,13aR)-2,11-Bis-(2-benzyloxy-ethyl)-10-(tert-butyl-diphenyl-silanyloxy)-4,6a,8-trimethyl-tetradecahydro-1,6,12-trioxa-cyclohepta[4,5]benzo[1,2]cycloocten-3-ol