N'-hydroxy-3-[2-methyl-3-(trifluoromethyl)benzyl]-2,4-dioxo-1-[4-(2-oxo-1,3-oxazolidin-3-yl)phenyl]-1,2,3,4-tetrahydropyrimidine-5-carboximidamide   、                                                                                      
氯甲酸异丁酯                                                                                                                                                              在
                                                                                                                                                                                 
吡啶                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
N,N-二甲基甲酰胺   、                                                                                         
5,5-dimethyl-1,3-cyclohexadiene                                                                                  为溶剂,
                                                                                                                                                    反应 2.0h,
                                                                                                                以29%的产率得到3-[2-methyl-3-(trifluoromethyl)benzyl]-5-(5-oxo-4,5-dihydro-1,2,4-oxadiazol-3-yl)-1-[4-(2-oxo-1,3-oxazolidin-3-yl)phenyl]pyrimidine-2,4(1H,3H)-dione