N-[7-ethyl-6-(2-ethyl-2H-pyrazol-3-yl)-2,4-dioxo-1,4-dihydro-2H-quinazolin-3-yl]-methanesulfonamide   、                                                                                      
己酰氯                                                                                                                                                                                                                                                                                                          以to yield N—[7-ethyl-6-(2-ethyl-2H-pyrazol-3-yl)-2,4-dioxo-1,4-dihydro-2H-quinazolin-3-yl]-N-hexanoyl-methanesulfonamide的产率得到N-[7-ethyl-6-(2-ethyl-2H-pyrazol-3-yl)-2,4-dioxo-1,4-dihydro-2H-quinazolin-3-yl]-N-hexanoyl-methanesulfonamide