4-amino-2-[5-fluoro-1-(2-fluorobenzyl)-6-methyl-1H-pyrazolo[3,4-b]pyridin-3-yl]-5,5-dimethyl-5,7-dihydro-6H-pyrrolo[2,3-d]pyrimidin-6-one 在
二碘甲烷 、
亚硝酸异戊酯 作用下,
以
1,4-二氧六环 为溶剂,
以55%的产率得到2-[5-fluoro-1-(2-fluorobenzyl)-6-methyl-1H-pyrazolo[3,4-b]pyridin-3-yl]-4-iodo-5,5-dimethyl-5,7-dihydro-6H-pyrrolo[2,3-d]pyrimidin-6-one