N-[6-(1-hydroxy-propyl)-2,4-dioxo-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-methanesulfonamide   、                                                                                      
戊酰氯                                                                                                                                                                                                                                                                                                          以to yield N-[6-(1-hydroxy-propyl)-2,4-dioxo-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-N-pentanoyl-methanesulfonamide的产率得到N-[6-(1-hydroxy-propyl)-2,4-dioxo-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-N-pentanoyl-methanesulfonamide