、 4-(8-(bromomethyl)-9-methyl-2-(2-methyl-1H-benzo[d]imidazol-1-yl)-9H-purin-6-yl)morpholine 、
1-(2,2,2-三氟乙基)哌嗪 以to give 267的产率得到4-(9-methyl-2-(2-methyl-1H-benzo[d]imidazol-1-yl)-8-((4-(2,2,2-trifluoroethyl)piperazin-1-yl)methyl)-9H-purin-6-yl)morpholine