4-[2-(5-Methyl-2-methylsulfanyl-6-oxo-6H-pyrimidin-1-yl)-ethyl]-5-pyrrolidin-1-yl-4,5-dihydro-isoxazole-3-carboxylic acid ethyl ester 在
盐酸 作用下,
以
氯仿 为溶剂,
以68%的产率得到4-[2-(5-methyl-2-methylsulfanyl-6-oxo-1,6-dihydropyrimidin-1-yl)ethyl]isoxazole-3-carboxylic acid ethyl ester