n-butyl (2S)-2-{[{[(2R,3R,4R,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-3,4-dihydroxy-4-methyltetrahydrofuran-2-yl]-methoxy}-(4-chlorophenoxy)phosphoryl]-amino}propanoate trifluoroacetate                                                                                                                                                              在
                                                                                                                                                                                 
potassium tert-butylate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二甲基亚砜                                                                                  为溶剂,
                                                                                                                                                    反应 0.25h,
                                                                                                                生成                                                 (S)-n-butyl (2S)-2-{[(4aR,6R,7R,7aR)-6-(4-amino-2-oxopyrimidin-1(2H)-yl)-7-hydroxy-7-methyl-2-oxidotetrahydro-4H-furo[3,2-d][1,2,3]dioxaphosphinin-2-yl]amino}propanoate trifluoroacetate   、                                                                                             (R)-n-butyl (2S)-2-{[(4aR,6R,7R,7aR)-6-(4-amino-2-oxopyrimidin-1(2H)-yl)-7-hydroxy-7-methyl-2-oxidotetrahydro-4H-furo[3,2-d][1,2,3]dioxaphosphinin-2-yl]amino}propanoate trifluoroacetate