硫脲 、
5-[1-(2-Hydroxy-4-methoxy-phenyl)-meth-(Z)-ylidene]-3-{[1-phenyl-meth-(E)-ylidene]-amino}-imidazolidine-2,4-dione 在
sodium hydroxide 作用下,
以
甲醇 为溶剂,
以63%的产率得到6-(2-Hydroxy-4-methoxy-phenyl)-9-{[1-phenyl-meth-(E)-ylidene]-amino}-2-thioxo-1,2,3,6,7,9-hexahydro-purin-8-one