(6S,16S)-di(tert-butyl) 11-benzyl-9,13-dihydroxy-2,2,20,20-tetramethyl-4,18-dioxo-3,19-dioxa-5,11,17-triazahenicosane-6,16-dicarboxylate                                                                                                                                                              在
                                                                                                                                         palladium on activated charcoal                                                                                                                                                                                                                               
氢气                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇                                                                                  为溶剂,
                                                                                                                                                    反应 4.5h,
                                                                                                                以4.45 g的产率得到(S)-2-tert-Butoxycarbonylamino-6-((S)-5-tert-butoxycarbonyl-5-tert-butoxycarbonylamino-2-hydroxy-pentylamino)-5-hydroxy-hexanoic acid tert-butyl ester