2-diphenylmethylsilylethyl S-p-methoxyphenyl 5'-O-monomethoxytritylthymidine 3'-phosphorothioate                                                                                                                                                              在
                                                                                                                                                                                 
三氟乙酸                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
二氯甲烷                                                                                  为溶剂,
                                                                                                                                                                                        以88%的产率得到Thiophosphoric acid O-[(2S,3R,5S)-2-hydroxymethyl-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl] ester S-(4-methoxy-phenyl) ester O'-[2-(methyl-diphenyl-silanyl)-ethyl] ester