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. 21, 2004
Filed:
May. 28, 2002
Applicant:
Inventors:
Lee Tai Liu, Taipei, TW;
Hsiang-Ling Huang, Taipei, TW;
Pao-Chiung Hong, Taipei, TW;
Shyh-Fong Chen, Taipei, TW;
Assignee:
Development Center for Biotechnology, Taipei, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; A61K 3/1445 ;
U.S. Cl.
CPC ...
C07D / ; A61K 3/1445 ;
Abstract
A new method for the preparation of chiral 4-substituted 2-piperidinones, trans-3,4-disubstituted 2-piperidinones, and trans-3,4-disubstituted piperidines is invented. Chiral paroxetine can be obtained from a chiral trans-3,4-disubstituted piperidine intermediate in high purity and good selectivity.