(9-{(2R,3S,4S,5R)-4-Hydroxy-5-hydroxymethyl-3-[2-(4-nitro-phenyl)-ethoxycarbonylamino]-tetrahydro-furan-2-yl}-9H-purin-6-yl)-carbamic acid 2-(4-nitro-phenyl)-ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 
四氮唑                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
吡啶   、                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                    反应 48.0h,
                                                                                                                生成                                                 (9-{(2R,3S,4S,5R)-5-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-[(2-cyano-ethoxy)-diisopropylamino-phosphanyloxy]-3-[2-(4-nitro-phenyl)-ethoxycarbonylamino]-tetrahydro-furan-2-yl}-9H-purin-6-yl)-carbamic acid 2-(4-nitro-phenyl)-ethyl ester