9-(3-O-acetyl-2-bromo-2,5-dideoxy-β-D-arabinofuranosyl)-2-(cyclopentyloxy)-9H-purin-6-amine 、 9-(2-O-acetyl-3-bromo-3,5-dideoxy-β-D-xylofuranosyl)-2-(cyclopentyloxy)-9H-purin-6-amine 在
potassium carbonate 作用下,
以
甲醇 为溶剂,
反应 1.0h,
生成
9-(2,3-anhydro-5-deoxy-β-D-ribofuranosyl)-2-(cyclopentyloxy)-9H-purin-6-amine