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:
Jun. 05, 1984
Filed:
Jan. 20, 1982
Applicant:
Inventors:
Werner Aschwanden, Ettingen, CH;
Emilio Kyburz, Reinach, CH;
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ;
U.S. Cl.
CPC ...
424274 ; 548544 ; 548110 ;
Abstract
1-(3-Hydroxy-4-methoxybenzoyl)-3-hydroxy-2-pyrrolidinone of the formula ##STR1## suitable for the control or prevention of cerebral insufficiency is described. The compound contains an asymmetric carbon atom. Therefore, the two optically active enantiomeric forms as well as the racemate are described. The compound of formula I can be prepared by cleaving the protecting group(s) from a corresponding compound in which at least one of the two hydroxy groups is protected.