4-硝基苯基 N-(叔丁氧羰基)-L-亮氨酸酯   、                                                                                      
(S)-[(2S,3S,4S)-2-Amino-4-hydroxy-4-(5-hydroxy-pyridin-2-yl)-3-methyl-butyrylamino]-[(2R,3S,4R,5R)-5-(4-formyl-2-oxo-2,3-dihydro-imidazol-1-yl)-3,4-dihydroxy-tetrahydro-furan-2-yl]-acetic acid; compound with trifluoro-acetic acid                                                                                                                                                              在
                                                                                                                                                                                 
N-甲基吗啉                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 30.0h,
                                                                                                                生成                                                 (S)-[(2S,3S,4S)-2-((S)-2-tert-Butoxycarbonylamino-4-methyl-pentanoylamino)-4-hydroxy-4-(5-hydroxy-pyridin-2-yl)-3-methyl-butyrylamino]-[(2R,3S,4R,5R)-5-(4-formyl-2-oxo-2,3-dihydro-imidazol-1-yl)-3,4-dihydroxy-tetrahydro-furan-2-yl]-acetic acid