6-methyl-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-2,4(1H,3H)-pyrimidinedione 在
tetraphosphorus decasulfide 作用下,
以
1,4-二氧六环 为溶剂,
反应 0.5h,
以98%的产率得到(2R,3R,4R,5R)-2-((benzoyloxy)methyl)-5-(4-mercapto-6-methyl-2-oxopyrimidin-1(2H)-yl)tetrahydrofuran-3,4-diyl dibenzoate