{3-[5-(3-chloro-4-fluoro-benzyl)-8-hydroxy-5-methyl-6-oxo-5,6-dihydro-indolizin-7-yl]-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-7-yl}-carbamic acid tert-butyl ester 、
盐酸 、
Rochelle's salt 在
乙酸乙酯 、 Brine 、 silica gel 、
氮 、
7-(7-amino-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-3-yl)-5-(3-chloro-4-fluoro-benzyl)-8-hydroxy-5-methyl-indolizin-6-one 作用下,
以
二氯甲烷 、
1,4-二氧六环 为溶剂,
反应 4.0h,
以to afford the desired product, 7-(7-amino-1,1-dioxo-1,4-dihydro-1λ6-benzo[1,2,4]thiadiazin-3-yl)-5-(3-chloro-4-fluoro-benzyl)-8-hydroxy-5-methyl-indolizin-6-one (0.26 g, 0.52 mmol, 96%) as a golden oil的产率得到7-(7-amino-1,1-dioxo-1,4-dihydro-1λ
6-benzo[1,2,4]thiadiazin-3-yl)-5-(3-chloro-4-fluoro-benzyl)-8-hydroxy-5-methyl-indolizin-6-one