[(2R,3R,4S,5R)-3,4,5-triacetyloxy-6-phosphonooxyoxan-2-yl]methyl acetate 、
1-(2,3-O-Isopropylidene-β-D-ribofuranosyl)-3-(4-methoxybenzyl)uracil 在
吡啶 、
三氯乙腈 作用下,
反应 0.25h,
以71%的产率得到[(2R,3R,4S,5R)-6-[[(3aR,4R,6R,6aR)-4-[3-[(4-methoxyphenyl)methyl]-2,4-dioxopyrimidin-1-yl]-2,2-dimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]methoxy-hydroxyphosphoryl]oxy-3,4,5-triacetyloxyoxan-2-yl]methyl acetate