2-tert-Butoxycarbonylamino-4-methylsulfanyl-butyric acid 3-(2,3-dihydro-benzo[1,4]dioxin-6-yl)-2-methyl-4-oxo-4H-chromen-7-yl ester 在
盐酸 作用下,
以
四氢呋喃 、
溶剂黄146 为溶剂,
反应 0.5h,
以84%的产率得到2-Amino-4-methylsulfanyl-butyric acid 3-(2,3-dihydro-benzo[1,4]dioxin-6-yl)-2-methyl-4-oxo-4H-chromen-7-yl ester; hydrochloride