ethyl 6-({8-[(2-methoxyethyl)amino]-1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl}methyl)-1-methyl-4-(4-methylphenyl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate 在
sodium t-butanolate 作用下,
以
叔丁醇 为溶剂,
反应 6.0h,
以71%的产率得到12-(2-methoxyethyl)-1,3,7-trimethyl-10-p-tolyl-9,10-dihydro-1H-pyrimido[5',4':5,6][1,3]diazepino[2,1-f]purine-2,4,8,11(3H,6H,7H,12H)-tetraone