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:
Nov. 10, 1992
Filed:
Mar. 07, 1991
Erhard Klauschenz, Berlin, DE;
Volker Hagen, Berlin, DE;
Angela Hagen, Berlin, DE;
Peter Muschick, Berlin, DE;
Brigitte Schlegel, Berlin, DE;
Sabine Heer, Dresden, DE;
Gottfried Faust, Radebeul, DE;
Hans-Joachim Jansch, Radebeul, DE;
Arzneimittelwerk Dresden G.m.b.H., Radebeul, DE;
Abstract
A 3-cyano-5,4'-bipyridine-1'-oxide of the formula ##STR1## and their pharmaceutically acceptable acid addition salts, wherein R is an amino, alkoxy, oxyalkoxy or chloro residue, have heart stimulating cardiotonic and vasodiolatory properties. They can be preparaed by (a) converting an R-substituted-3-cyano-bipyridine to its corresponding N-oxide, or (b) by substituting an R-residue or an R-unsubstituted precursor of the conpound of fomula (i), and if required, converting the product into its pharmaceutically acceptable acid addition salt.