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:
Mar. 08, 2022
Filed:
Dec. 12, 2018
Applicants:
Nippon Kayaku Co., Ltd., Tokyo, JP;
Meiji Seika Pharma Co., Ltd., Tokyo, JP;
Inventors:
Akinori Morikawa, Ibaraki, JP;
Hirokazu Kuroda, Ibaraki, JP;
Kazumi Yamamoto, Kanagawa, JP;
Nozomu Nakanishi, Kanagawa, JP;
Assignees:
NIPPON KAYAKU CO., LTD, Tokyo, JP;
MEIJI SEIKA PHARMA CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 215/233 (2006.01);
U.S. Cl.
CPC ...
C07D 215/233 (2013.01);
Abstract
[Problem] The present invention provides a method for producing and isolating a target quinolone derivative using general industrial facilities with high purity. [Solving means] The present invention also provides a method for producing a quinolone derivative, the method including reacting a ketone with an anthranilic acid derivative using an aluminum halide and removing the aluminum halide under basic conditions.