N-(2,4-dioxo-6-pyrrol-1-yl-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl)-methanesulfonamide 、
氯甲酸乙酯 以to yield (2,4-dioxo-6-pyrrol-1-yl-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl)-methanesulfonyl-carbamic acid ethyl ester的产率得到(2,4-dioxo-6-pyrrol-1-yl-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl)-methanesulfonyl-carbamic acid ethyl ester