4-[1-(Ethoxycarbonylmethyl)-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl]piperazine-1-carboxylic acid tert-butyl ester 、
2-甲氧基苯基硼酸 、
吡啶 在
copper(II) acetate silica gel 作用下,
以
四氢呋喃 为溶剂,
反应 72.0h,
以to obtain 18 mg of the title compound from a fraction的产率得到4-[7-(2-Methoxyphenyl)-1-(ethoxycarbonylmethyl)-3-methyl-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl]piperazine-1-carboxylic acid tert-butyl ester