methyl 2-[2-bromopropanoyl]-5-methylthiazole-4-carboxylate   、                                                                                      
2-(N-butoxycarbonyl-2,2,5-trimethyloxazolidinyl)-5-methylthiazole-4-thiocarboxamide                                                                                                                                                              在
                                                                                                                                                                                 
potassium hydrogencarbonate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙二醇二甲醚                                                                                  为溶剂,
                                                                                                                                                                                        以65%的产率得到methyl 2-(2-{2-[2-(4S,5R)-(N-butoxycarbonyl-2,2,5-trimethyl(oxazolidin-4-yl)-5-methyl(thiazol-4-yl))-5-methyl(thiazol-4-yl)]}-5-methylthiazole)-4-carboxylate