Malonic acid (2R,3S,4R,5R)-5-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-3,4-dihydroxy-tetrahydro-furan-2-ylmethyl ester 5-methoxymethoxy-pyridin-2-ylmethyl ester 在
三氟乙酸 作用下,
以52%的产率得到1-O-[[(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methyl] 3-O-[(5-hydroxypyridin-2-yl)methyl] propanedioate