齐多夫定   、                                                                                      
11-(2,2,2-Trifluoro-ethoxy)-undecanoic acid (R)-2-phosphonooxy-1-[11-(2,2,2-trifluoro-ethoxy)-undecanoyloxymethyl]-ethyl ester                                                                                                                                                              在
                                                                                                                                                                                 
吡啶   、                                                                                                  
对甲苯磺酰氯                                                                                                                                  作用下,
                                                                                                                                                                                        反应 0.33h,
                                                                                                                以40%的产率得到11-(2,2,2-Trifluoro-ethoxy)-undecanoic acid (R)-2-{[(2S,3S,5R)-3-azido-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-ylmethoxy]-hydroxy-phosphoryloxy}-1-[11-(2,2,2-trifluoro-ethoxy)-undecanoyloxymethyl]-ethyl ester