乙酸酐 、
2-Methylsulfanyl-9-((2R,3R,4S,5S,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yl)-1,9-dihydro-purin-6-one 在
吡啶 作用下,
反应 12.0h,
以71%的产率得到Acetic acid (2R,3R,4S,5R,6R)-4,5-diacetoxy-6-acetoxymethyl-2-(2-methylsulfanyl-6-oxo-1,6-dihydro-purin-9-yl)-tetrahydro-pyran-3-yl ester