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:
Feb. 13, 2001
Filed:
Apr. 10, 2000
Applicant:
Inventors:
Antoni Torrens-Jover, Barcelona, ES;
Jordi Frigola-Constansa, Barcelona, ES;
Assignee:
Laboratorios Del Dr. Esteve, S.A., Barcelona, ES;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
C07D / ;
Abstract
The procedure comprises reacting the mixture that comprises 2-[phenyl(1-methyl-1 H-pyrazole-5-yl)methoxy]-N,N-dimethylethanamine (I) with an enantiomer of an optically active acid to form a diastereoisomeric salt, separating said salt and liberating the enantiomer of said compound (I). The dextrorotatory enantiomer of (I) can be obtained by reacting a racemic mixture or non-racemic mixture of (I) with (+)-ditoluyl-L-tartaric acid, optionally mixed with p-toluensulphonic acid. Compound (I) has analgesic properties and its most active enantiomer is dextrorotatory.