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:
Aug. 25, 1992
Filed:
Mar. 20, 1991
Applicant:
Inventors:
Mauro Napoletano, Milan, IT;
Gian C Grancini, Nova Milanese, IT;
Carlo Veneziani, Bresso, IT;
Dario Chiarino, Monza, IT;
Assignee:
Zambon Group S.p.A, Vicenza, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
548554 ; 548550 ;
Abstract
A stereoselective process for the preparation of the compounds of formula ##STR1## wherein R, R.sub.1, R.sub.2, a and b have the meanings reported in the specification, is described. The compounds of formula I have a remarkable central analgesic activity and they are useful in the pharmaceutical field.