(3R,4S,5S)-5-amino-3,4-dimethyloxan-2-one   、                                                                                      
(2S,3R)-3-azido-2-[(2-methylpropan-2-yl)oxycarbonylamino]butanoic acid                                                                                                                                                              在
                                                                                                                                                                                 
N,N-二异丙基乙胺   、                                                                                                  N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以114 mg的产率得到tert-butyl N-[(2S,3R)-3-azido-1-[[(3S,4S,5R)-4,5-dimethyl-6-oxooxan-3-yl]amino]-1-oxobutan-2-yl]carbamate