(2R,3S,5R)-2-((bis(4-methoxyphenyl)(phenyl)methoxy)methyl)-5-(2-isobutyramido-6-oxo-1,6-dihydro-9H-purin-9-yl)tetrahydrofuran-3-yl ((R)-3-((tert-butyldiphenylsilyl)oxy)-2-((5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)methoxy)propyl)carbamate                                                                                                                                                              在
                                                                                                                                                                                 
四丁基氟化铵                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
四氢呋喃                                                                                  为溶剂,
                                                                                                                                                                                        以65%的产率得到[(R)-3-Hydroxy-2-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-ylmethoxy)-propyl]-carbamic acid (2R,3S,5R)-2-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-5-(2-isobutyrylamino-6-oxo-1,6-dihydro-purin-9-yl)-tetrahydro-furan-3-yl ester