2-[(2-methylsulfanyl-7-oxo-6-phenyl-[1,3]thiazolo[5,4-d]pyrimidin-5-yl)sulfanyl]-2-phenylacetic acid 在
吡啶 、
乙酸酐 作用下,
反应 0.08h,
以96.6%的产率得到4-methylsulfanyl-7-oxo-8,11-diphenyl-3,10-dithia-5,8-diaza-1-azoniatricyclo[7.3.0.02,6]dodeca-1(9),2(6),4,11-tetraen-12-olate