2'-deoxy-2', 2'-difluoropyrimidine nucleosides and 2'-deoxy-2'-fluoropyrimidine nucleosides and intermediates
US5648473A · kind A · utility
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9Claims
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Key dates
| Filing date | May 30, 1995 |
| Grant date | Jul 15, 1997 |
| Priority date | — |
| Expiry date | May 30, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H19/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A stereoselective glycosylation process for preparing beta-anomer enriched 2'-deoxy-2',2'-difluoropyrimidine nucleosides and 2'-deoxy-2'-fluoropyrimidine nucleosides which involves reacting an alpha-anomer enriched 2-deoxy-2,2-difluorocarbohydrate or 2-deoxy-2-fluorocarbohydrate with at least a molar equivalent of a pyrimidine nucleobase derivative in a low freezing inert solvent.
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