Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 28, 2020
Patent Application Number
16116804
Date Filed
August 29, 2018
Patent Citations
Patent Citations Received
Patent Primary Examiner
Patent 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.
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