7-ethoxycarbonylmethyl-4,10-bis-[((S)-1-phenyl-ethylcarbamoyl)-methyl]-1,4,7,10-tetraaza-cyclododecane-1-carboxylic acid tert-butyl ester                                                                                                                                                              在
                                                                                                                                                                                 lithium hydroxide                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 12.0h,
                                                                                                                以98%的产率得到7-carboxymethyl-4,10-bis-[((S)-1-phenyl-ethylcarbamoyl)-methyl]-1,4,7,10-tetraaza-cyclododecane-1-carboxylic acid tert-butyl ester