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:
Apr. 03, 2006
Filed:
Oct. 07, 2003
Applicants:
Pavel Hradil, Bohunovice, CZ;
Miroslav Urbasek, Olomouc, CZ;
Lubomir Kvapil, Slatinice, CZ;
Petr Slezar, Olomouc, CZ;
Inventors:
Pavel Hradil, Bohunovice, CZ;
Miroslav Urbasek, Olomouc, CZ;
Lubomir Kvapil, Slatinice, CZ;
Petr Slezar, Olomouc, CZ;
Assignee:
Farmak, a.s., Olomouc, CZ;
Primary Examiner:
Int. Cl.
CPC ...
C07C 303/00 (2005.12);
U.S. Cl.
CPC ...
Abstract
A process for preparing optically pure enantiomers of R-(−)tamsulosin of formiula Ia and S-(+)tamsulosin of formula Ib by resolving racemic tamsulosin of formula I by means of (IR)-(−)-camphor-10-sulfonic acid and (1S)-(+)-camphor-10-sulfonic acid, resp., in an environment of organic solvents, water or mixtures thereof.