1-(2',3',5'-tri-O-benzoyl-β-D-ribofuranosyl)-2-oxo(1H)-pyrimido[4,5-d]pyrimidine-4(3H)-thione 在
氨 作用下,
以
甲醇 为溶剂,
反应 24.0h,
以64%的产率得到1-((2R,3R,4S,5R)-3,4-Dihydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-4-thioxo-3,4-dihydro-1H-pyrimido[4,5-d]pyrimidin-2-one