2-methylthio-6-chloro-9-(2',3',5'-tri-O-acetyl-β-D-ribofuranosyl)purine 在
potassium permanganate 、
溶剂黄146 作用下,
反应 3.0h,
以75%的产率得到Acetic acid (2R,3R,4R,5R)-4-acetoxy-5-acetoxymethyl-2-(6-chloro-2-methanesulfonyl-purin-9-yl)-tetrahydro-furan-3-yl ester