N-(2,4-dioxo-6-pyrrol-1-yl-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl)-methanesulfonamide 、
丁酰氯 以to yield N-butyryl-N-(2,4-dioxo-6-pyrrol-1-yl-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl)-methanesulfonamide的产率得到N-butyryl-N-(2,4-dioxo-6-pyrrol-1-yl-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl)-methanesulfonamide