Process for producing carbostyril derivatives
US7825251B2 · kind B2 · utility
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18References
10Claims
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Assignee
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Key dates
| Filing date | Aug 3, 2007 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Dec 18, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D401/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a process for producing carbostyril derivatives (I) which are known to be useful as medical drug such as antithrombotic agent, cerebral circulation improver, anti-inflammatory agent, antiulcer agent, etc. in a high yield and a high purity. The carbostyril derivatives (I) can be produced by reacting a carbostyril derivative (II) with a tetrazole derivative (III) in the presence of a phase transfer catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.