N-[6-(2-methyl-2H-pyrazol-3-yl)-2,4-dioxo-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-methanesulfonamide 、
戊酰氯 在
crude product 、 silica gel 、 cyclohexane, ethyl acetate 、
乙酸乙酯 作用下,
以
吡啶 为溶剂,
反应 1.0h,
以to yield N-[6-(2-methyl-2H-pyrazol-3-yl)-2,4-dioxo-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-N-pentanoyl-methanesulfonamide (198.4 mg, 0.407 mmol, 81% yield) as white foam的产率得到N-[6-(2-methyl-2H-pyrazol-3-yl)-2,4-dioxo-7-trifluoromethyl-1,4-dihydro-2H-quinazolin-3-yl]-N-pentanoyl-methanesulfonamide