Crystalline form of tenofovir disoproxil and a process for...

Details Crystalline form of tenofovir disoproxil and a process for... Crystalline form of tenofovir disoproxil and a process for...

C - Chemistry, Metallurgy

07

F

C07F 9/6561 (2006.01)

Patent

CA 2722165

Crystalline Form C of tenofovir disoproxil, salts thereof and a process for its preparation. The process involves adding a solution comprising tenofovir disoproxil and an organic solvent to salt-saturated water, whereby the crystalline Form C of tenofovir disoproxil precipitates. The crystalline Form C of tenofovir disoproxil may be converted to a salt thereof. There is also provided a process for purifying a crude product comprising tenofovir monoisoproxil and tenofovir disoproxil.

La présente invention concerne la forme cristalline C du ténofovir disoproxil, ses sels et son procédé de préparation. Le procédé implique laddition dune solution comprenant du ténofovir disoproxil et un solvant organique à de leau saturée en sel, ce qui entraîne la précipitation de la forme cristalline C du ténofovir disoproxil. La forme cristalline C du ténofovir disoproxil peut être convertie en lun de ses sels. Linvention a également pour objet un procédé de purification dun produit brut comprenant du ténofovir monoisoproxil et du ténofovir disoproxil.

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