2'-methyluridine 、
triethylammonium bis(pivaloyloxymethyl)phosphate 在
双(2-氧代-3-恶唑烷基)次磷酰氯 、
N,N-二异丙基乙胺 、
3-硝基-1,2,4-三氮唑 作用下,
反应 2.0h,
以80%的产率得到[[(3aR,4R,6R,6aR)-4-(2,4-dioxopyrimidin-1-yl)-3a-methylspiro[6,6a-dihydro-4H-furo[3,4-d][1,3]dioxole-2,1'-cyclopentane]-6-yl]methoxy-(2,2-dimethylpropanoyloxymethoxy)phosphoryl]oxymethyl 2,2-dimethylpropanoate