{2-[4-(2-hydroxy-4-methoxy-6-methyl-phenyl)-3-(3-methyl-isoxazol-5-yl)-2,4-dioxo-butyl]-[1,3]dioxolan-2-yl}-acetic acid ethyl ester 在
盐酸 作用下,
以
乙醇 为溶剂,
生成
{2-[7-methoxy-5-methyl-3-(3-methyl-isoxazol-5-yl)-4-oxo-4H-chromen-2-ylmethyl]-[1,3]dioxolan-2-yl}-acetic acid ethyl ester