(R)-N-[2,4-dioxo-6-(tetrahydro-furan-2-yl)-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-methanesulfonamide 、
2-甲氧基氯甲酸乙酯 以to yield methanesulfonyl-N—((R)-2,4-dioxo-6-tetrahydro-furan-2-yl-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl)-carbamic acid 2-methoxy-ethyl ester的产率得到methanesulfonyl-N-((R)-2,4-dioxo-6-tetrahydro-furan-2-yl-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl)-carbamic acid 2-methoxy-ethyl ester