9-[(1R,2S,3S,4S)-3,4-Bis-(tert-butyl-diphenyl-silanyloxymethyl)-2-fluoro-cyclopentyl]-6-chloro-9H-purine                                                                                                                                                              在
                                                                                                                                                                                 
氨                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
1,4-二氧六环   、                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 18.0h,
                                                                                                                以94%的产率得到9-[(1R,2S,3S,4S)-3,4-Bis-(tert-butyl-diphenyl-silanyloxymethyl)-2-fluoro-cyclopentyl]-9H-purin-6-ylamine