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. 02, 2023
Filed:
May. 27, 2021
Applicants:
Tai Gen Biotechnology Co., Ltd., Taipei, TW;
Taigen Biopharmaceuticals Co. (Beijing), Ltd., Beijing, CN;
Inventors:
Wen-Chang Chen, Taipei, TW;
Han-Pei Hsu, Taipei, TW;
Shan-Yen Chou, Taipei, TW;
Shih-Chieh Chuang, Taipei, TW;
Chi-Feng Yen, Taipei, TW;
Assignees:
TaiGen Biotechnology Co., Ltd., Taipei, TW;
TaiGen Biopharmaceuticals Co.(Beijing), Ltd., Beijing, CN;
Primary Examiner:
Int. Cl.
CPC ...
C07D 409/12 (2006.01); C07D 471/04 (2006.01); C07D 337/12 (2006.01);
U.S. Cl.
CPC ...
C07D 409/12 (2013.01); C07D 337/12 (2013.01); C07D 471/04 (2013.01);
Abstract
Provided is a stereoselective synthesis of an intermediate for the preparation of the heterocyclic derivative as a Cap-dependent endonuclease inhibitor. The synthesis process has the advantages of simple operation, higher yield and relatively controllable steroselectivity, such that it is suitable for large-scale production.