benzyl (1S,2R,3S,4R)-4-(2-chloro-6-(cyclopentylamino)-9H-purin-9-yl)-2,3-dihydroxycyclopentylcarbamate   、                                                                                      
dibenzyl (1S,2R,3S,4R)-4-(2-chloro-6-(cyclopentylamino)-9H-purin-9-yl)-2,3-dihydroxycyclopentyl-iminodicarbonate                                                                                                                                                              在
                                                                                                                                         palladium 10% on activated carbon                                                                                                                                                                                                                               
氢气   、                                                                                                  
盐酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙醇   、                                                                                         
甲醇                                                                                  为溶剂,
                                                                                                                                                    反应 6.0h,
                                                                                                                生成                                                 (1S,2R,3S,5R)-3-amino-5-(6-cyclopentylamino-purin-9-yl)-cyclopentane-1,2-diol hydrochloride   、                                                                                             (1S,2R,3S,5R)-3-amino-5-(2-chloro-6-cyclopentylamino-purin-9-yl)-cyclopentane-1,2-diol hydrochloride