Process for the preparation of Tenofovir
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Abstract
The present invention relates to novel Tenofovir disoproxil hemifumarate salt, which is prepared by dealkylation of Phosphonate esters by using mineral acids followed by esterification and crystallization to give crystalline Tenofovir disoproxil. The Tenofovir disoproxil is further converted to fumarate salts with improved yield.
13 Citations
13 Claims
- 1. Tenofovir disoproxil hemifumarate.
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4. A process for the preparation of Tenofovir which comprises:
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i) dealkylating (R)-9[2-(diethylphosphonomethoxy)propyl]adenine with a mineral acid and ii) isolation and drying the product to get Tenofovir. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification