The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 1992
Filed:
Dec. 18, 1990
Applicant:
Inventors:
Akira Shiozawa, Omiya, JP;
Kazuhisa Narita, Tokyo, JP;
Shuji Kurashige, Urawa, JP;
Takeji Sakasai, Urawa, JP;
Kazuo Ohtsuki, Tokyo, JP;
Hideo Sugimura, Tokyo, JP;
Hirotaka Yamamoto, Yono, JP;
Assignee:
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548571 ;
Abstract
A process for producing an optically active aminoketone derivative having a central muscle relaxant activity is described wherein a racemic mixture of the aminoketone is reacted with optically active L-acetylphenylglycine and then isolating the optically active L-aminoketone from the diastereomeric salts formed by the reaction.