The present invention provides novel anhydrous polymorph forms of 2R,3S,4R,5R)-5-(6-(cyclopentylamino)-9H-purin-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.
本发明提供了2R,3S,4R,5R)-5-(6-(环戊基
氨基)-9H-
嘌呤-9-基)-3,4-二羟基
四氢呋喃-2-基甲基
硝酸盐(化合物A)的新型无
水多晶形式。本发明还提供了制备化合物A无
水多晶形式的方法。