1-((2R,3R,4R,5R)-3,4-Bis-benzoyloxy-5-benzoyloxymethyl-tetrahydro-furan-2-yl)-5-(4-bromo-phenylsulfanylmethyl)-2,6-dioxo-1,2,3,6-tetrahydro-pyrimidine-4-carboxylic acid ethyl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 0.5h,
以49.9%的产率得到5-(4-Bromo-phenylsulfanylmethyl)-1-((2R,3R,4S,5R)-3,4-dihydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-2,6-dioxo-1,2,3,6-tetrahydro-pyrimidine-4-carboxylic acid ethyl ester