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. 04, 1997
Filed:
Aug. 09, 1994
Applicant:
Inventors:
Assignee:
Glaxo Group Limited, London, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546224 ; 546223 ;
Abstract
A process for the preparation of the compound of formula (I), a useful intermediate for the preparation of analgesic agents. ##STR1## which comprises reading a compound of formula (II) or an acid addition salt thereof ##STR2## with propionic anhydride and then treating the resultant product with methanol.