丁炔二酸二甲酯 、
2-methoxy-3-methyl-6-(2,3,5-tri-O-acetyl-α-D-ribofuranosylamino)pyrimidin-4-(3H)-one 以
乙腈 为溶剂,
反应 21.0h,
以63%的产率得到6-((2S,3R,4R,5R)-3,4-Diacetoxy-5-acetoxymethyl-tetrahydro-furan-2-ylamino)-2-methoxy-pyridine-3,4-dicarboxylic acid dimethyl ester