Boc-D-valine caesium salt   、                                                                                      
5-Chloro-N-(chloroacetyl)-N-({(5S)-2-oxo-3-[4-(3-oxomorpholin-4-yl)phenyl]-1,3-oxazolidin-5-yl}methyl)thiophene-2-carboxamide                                                                                                                                                                                              以
                                                                                         
N,N-二甲基甲酰胺                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以85%的产率得到2-(5-chloro-N-(((S)-2-oxo-3-(4-(3-oxomorpholino)phenyl)oxazolidin-5-yl)methyl)thiophene-2-carboxamido)-2-oxoethyl (tert-butoxycarbonyl)-D-valinate