(E)-(2R,5S)-5-tert-Butoxycarbonylamino-2-methyl-hept-3-enoic acid                                                                                                                                                              在
                                                                                                                                                                                 O-(benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborate   、                                                                                                  
三乙胺                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                                                        生成                                                 ((E)-(2R,5S)-5-Amino-2-methyl-hept-3-enoylamino)-acetic acid methyl ester; compound with trifluoro-acetic acid