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:
May. 13, 1986
Filed:
Aug. 12, 1983
Applicant:
Inventors:
Shigeki Hamaguchi, Kobe, JP;
Hiroshi Yamamura, Takasago, JP;
Junzo Hasegawa, Akashi, JP;
Hajime Kawaharada, Kakogawa, JP;
Kiyoshi Watanabe, Akashi, JP;
Assignee:
Kanegafuchi Kagaku Kogyo Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07B / ;
U.S. Cl.
CPC ...
435280 ; 435121 ;
Abstract
A process for preparing the optically active oxazolidinone derivative [(S)-I] by utilizing microorganisms or enzymes having a stereoselective esterase activity capable of asymmetrically hydrolyzing the racemates of the acyloxyoxazolidinone derivative [(R,S)-II], by separating the unreacted compound [(S)-II] from the hydrolyzed compound [(R)-I] and by hydrolyzing the compound [(S)-II]. The compounds are useful as intermediates for preparing optically active .beta.-adrenergic blocking agents.