(E)-methyl 4-(2-(1,3-diethyl-7-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)vinyl)-2-methoxybenzoate 在
水 、 lithium hydroxide 作用下,
以
四氢呋喃 为溶剂,
以73%的产率得到(E)-4-(2-(1,3-diethyl-7-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl)vinyl)-2-methoxybenzoic acid