ANHYDROUS POLYMORPHS OF (2R,3S,4R,5R)-5-(6-(CYCLOPENTYLAMINO)-9H-PURIN-9-YL)-3,4-DI-HYDROXYTETRAH YDROFURAN-2 -YL) } METHYL NITRATE AND PROCESSES OF PREPARATION THEREOF

摘要

The present invention provides novel anhydrous polymorph forms of 2R,3S,4R,5R)-5-(6-(cyclopentylamino)-9Hpurin- 9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl nitrate (Compound A). The present invention also provides processes for preparation of the anhydrous polymorphic forms of compound A.