6-(3-cyclohexyl-2-oxopropanoylamino)-4-methyl-2,3-benzoxazin-1-one 、
苯乙炔 、
正丁基锂 以
四氢呋喃 为溶剂,
以After column chromatography, 120 mg of product were obtained的产率得到rac-6-[3-cyclohexyl-2-hydroxy-2-(phenylethynyl)propanoylamino]-4-methyl-2,3-benzoxazin-1-one