(5S,10S)-methyl 10-(tert-butoxycarbonylamino)-3,11-dioxo-1,4-diazacycloundec-7-ene-5-carboxylate                                                                                                                                                              在
                                                                                                                                                                                 palladium 10% on activated carbon   、                                                                                                  
氢气                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙酸乙酯                                                                                  为溶剂,
                                                                                                                                                                                        以87%的产率得到(5S,10S)-methyl 10-(tert-butoxycarbonylamino)-3,11-dioxo-1,4-diazacycloundecane-5-carboxylate