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:
Dec. 02, 2014
Filed:
Jul. 28, 2011
Applicants:
Shinji Kita, Toyama, JP;
Kazuya Tsuzaki, Toyama, JP;
Eitora Yamamura, Toyama, JP;
Inventors:
Assignees:
Sumitomo Dainippon Pharma Co., Ltd., Osaka, JP;
Kyowa Hakko Bio Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P 13/04 (2006.01); C12P 17/18 (2006.01); C12P 17/10 (2006.01); C12P 7/62 (2006.01); C12N 9/16 (2006.01); C12N 9/18 (2006.01); C07H 21/04 (2006.01); C07K 1/00 (2006.01); C07D 207/416 (2006.01); C12P 41/00 (2006.01); C07D 487/20 (2006.01); C12P 7/46 (2006.01);
U.S. Cl.
CPC ...
C12P 17/10 (2013.01); C12N 9/18 (2013.01); C07D 207/416 (2013.01); C12P 41/005 (2013.01); C07D 487/20 (2013.01); C12P 7/46 (2013.01);
Abstract
A process for efficiently producing optically active succinimide derivatives as key intermediates of (3R)-2'-(4-bromo-2-fluorobenzyl)spiro{pyrrolidine-3,4′(1′H)-pyrrolo[1,2-a]pyrazine}-1′,2,3′,5(2′H)-tetraone, which comprises the following reaction steps, and the step 2 is performed by using a non-animal-derived enzyme.