5-[(4-Chloro-2-fluorophenyl){5-fluoro-7-[(methylsulfanyl)methyl]-1H-indol-3-yl}methyl]-2,2-dimethyl-1,3-dioxane-4,6-dione                                                                                                                                                              在
                                                                                                                                         
铜                                                                                                                                                                                                                               silica gel   、                                                                                                  cyclohexane, ethyl acetate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
吡啶   、                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                以to result in 1.22 g (88% of theory) of the target compound的产率得到ethyl 3-(4-chloro-2-fluorophenyl)-3-{5-fluoro-7-[(methylsulfanyl)methyl]-1H-indol-3-yl}propanoate