Process for producing carbostyril derivatives
US6630590B1 · kind B1 · utility
4Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2002 |
| Grant date | Oct 7, 2003 |
| Priority date | — |
| Expiry date | Aug 1, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/4709
- WIPO fieldPharmaceuticals
- 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.