6-(3-cyclohexyl-2-oxopropanoylamino)-4-methyl-2,3-benzoxazin-1-one 、
4-甲苯基乙炔 、
正丁基锂 以
四氢呋喃 为溶剂,
以After column chromatography, 170 mg of product were obtained的产率得到rac-6-[3-cyclohexyl-2-hydroxy-2-((4-methylphenyl)ethynyl)propanoylamino]-4-methyl-2,3-benzoxazin-1-one