| 摘要 |
A method for efficiently purifying 5' protected 2'-deoxypurine nucleosides, efficient production of which has previously been difficult. Impurities can be separated by obtaining the 5' protected 2'-deoxypurine nucleoside as an inclusion crystal including a solvent such as that having a nitrile structure in order to purify the 5' protected 2'-deoxypurine nucleoside at a high purity. This invention enables synthesis of highly purified, protected deoxypurine nucleosides easily on a large scale, which has previously been performed by column chromatography method.
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