反,反-法呢基溴 、 ethyl 3-[(2R,3aR,4R,6R,6aR)-4-(3,4-dihydro-5-fluoro-2,4-dioxopyrimidin-1(2H)-yl)-6-(hydroxymethyl)-2-methyltetrahydrofuro[3,4-d] [1,3]dioxol-2-yl]propanoate 在
potassium carbonate 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以80%的产率得到ethyl 3-{(2R,3aR,4R,6R,6aR)-4-[5-fluoro-3,4-dihydro-2,4-dioxo-3-((2E,6E)-3,7,11-trimethyldodeca-2,6,10-trien-1-yl)pyrimidin-1(2H)-yl]-6-(hydroxymethyl)-2-methyltetrahydrofuro-[3,4-d] [1,3]dioxol-2-yl}propanoate