Conversion process for 2,3-benzodiazepine enantiomers
US7541355B2 · kind B2 · utility
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15References
18Claims
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Key dates
| Filing date | May 23, 2005 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Nov 26, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P25/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Methods for the racemization of an enantiomer of a 2,3-benzodiazepine molecule into the corresponding racemic mixture under either basic or acidic conditions are described. Furthermore, the invention relates to the conversion of an enantiomer of tofisopam or its metabolites to the corresponding opposite enantiomer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.