2-Fluoro-8-(6-iodo-benzo[1,3]dioxol-5-ylmethyl)-9-[2-(4-trityloxy-butoxy)-ethyl]-9H-purin-6-ylamine                                                                                                                                                              在
                                                                                                                                                                                 
chloroform methanol                                                                                                                                  作用下,
                                                                                                                以
                                                                                         trifluoracetic acid-dichloromethane                                                                                  为溶剂,
                                                                                                                                                    反应 4.0h,
                                                                                                                以to give the compound (6 mg, 35% yield)的产率得到4-{2-[6-Amino-2-fluoro-8-(6-iodo-benzo[1,3]dioxol-5-ylmethyl)-purin-9-yl]-ethoxy}-butan-1-ol