3-(2-fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)phenyl)-5-methyl-1-(2-(pyrrolidin-1-yl)ethyl)imidazolidine-2,4-dione                                                                                                                                                              在
                                                                                                                                                                                 
硫酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                                                        以86%的产率得到3-(2-fluoro-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)phenyl)-5-methyl-1-(2-(pyrrolidin-1-yl)ethyl)imidazolidine-2,4-dione sulphate