(R)-Benzyloxycarbonylamino-(3,5-dibromo-4-hydroxy-phenyl)-acetic acid methyl ester                                                                                                                                                              在
                                                                                                                                                                                 lithium perchlorate   、                                                                                                  
溶剂黄146   、                                                                                                  
锌                                                                                                                                  作用下,
                                                                                                                                                                                                                            生成                                                 (R)-Benzyloxycarbonylamino-[3,5-dibromo-4-(3-bromo-2,5-dihydroxy-phenoxy)-phenyl]-acetic acid methyl ester   、                                                                                             (R)-Benzyloxycarbonylamino-{3-[4-((R)-benzyloxycarbonylamino-methoxycarbonyl-methyl)-2,6-dibromo-phenoxy]-5-bromo-4-hydroxy-phenyl}-acetic acid methyl ester