(S)-phosphoric acid di-tert-butyl ester 1-(2-chloro-6-methylaminopurin-9-ylmethyl)-2-(di-tert-butoxyphosphoryloxy)ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 5percent trifluoroacetic acid                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 1.0h,
                                                                                                                生成                                                 Phosphoric acid mono-[(S)-3-(2-chloro-6-methylamino-purin-9-yl)-2-phosphonooxy-propyl] ester