(R)-N-[2,4-dioxo-6-(tetrahydro-furan-2-yl)-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-methanesulfonamide 、
丙酰氯 以to yield N—((R)-2,4-dioxo-6-tetrahydro-furan-2-yl-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl)-N-propionyl-methanesulfonamide的产率得到N-((R)-2,4-dioxo-6-tetrahydro-furan-2-yl-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl)-N-propionyl-methanesulfonamide