((3aR,4R,6R,6aR)-6-(4-benzamido-2-oxopyrimidin-1(2H)-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)methyl 4-methylbenzoate 、 alkaline earth salt of/the/ methylsulfuric acid 在
溶剂黄146 作用下,
生成
(2-amino-4,7-dioxo-3,4,7,8-tetrahydro-pteridin-6-yl)-acetic acid ethyl ester