(3S,4S,5R,6S)-1-N-benzyloxycarbonyl-3-[(2S)-(6-N-(tertbutoxycarbonyl)amino-2-N-(9-fluorenylmethoxycarbonyl)-amino)hexanoylaminomethyl]-4,5-O-isopropylidene-6-methyl-hexahydropyridazine-4,5-diol                                                                                                                                                              在
                                                                                                                                                                                 
哌啶                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 0.25h,
                                                                                                                以71%的产率得到(3S,4S,5R,6S)-1-N-benzyloxycarbonyl-3-[((2S)-6-N-(tertbutoxycarbonyl)amino-2-amino)hexanoylaminomethyl]-4,5-O-isopropylidene-6-methyl-hexahydropyridazine-4,5-diol