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. 31, 2024
Filed:
Mar. 15, 2023
Applicant:
Takeda Pharmaceutical Company Limited, Osaka, JP;
Inventors:
Koichiro Fukuoka, Osaka, JP;
Kazuhiro Miwa, Osaka, JP;
Assignee:
Takeda Pharmaceutical Company Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 495/04 (2006.01); C07D 333/38 (2006.01); C07D 409/12 (2006.01);
U.S. Cl.
CPC ...
C07D 495/04 (2013.01); C07D 333/38 (2013.01); C07D 409/12 (2013.01);
Abstract
The present invention provides a production method of a thienopyrimidine derivative or a salt thereof which has a gonadotropin releasing hormone (GnRH) antagonistic action with high quality in high yield. The present invention provides a method of producing a thienopyrimidine derivative, which comprises reacting 6-(4-aminophenyl)-1-(2,6-difluorobenzyl)-5-dimethylaminomethyl-3-(6-methoxypyridazin-3-yl)thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione or salt thereof, 1,1'-carbonyldiimidazole or a salt thereof and methoxyamine or a salt thereof, and the like.