Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Takao Nishi0
Muneaki Kurimura0
Norihiro Fukuyama0
Shinji Aki0
Akihiro Yamamoto0
Junichi Minamikawa0
Michiaki Tominaga0
Date of Patent
November 2, 2010
0Patent Application Number
118335920
Date Filed
August 3, 2007
0Patent Primary Examiner
Patent 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.
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