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. 13, 1989
Filed:
Apr. 18, 1986
Applicant:
Inventors:
Janos Kreidl, Budapest, HU;
Gyorgy Visky, Budapest, HU;
Laszlo Czibula, Budapest, HU;
Bela Stefko, Budapest, HU;
Maria Farkas nee Kirjak, Budapest, HU;
Zsolt Szombathelyi, Budapest, HU;
Egon Karpati, Budapest, HU;
Bela Kiss, Vecses, HU;
Katalin Csomor, Budapest, HU;
Laszlo Szporny, Budapest, HU;
Lilla Forgacs, Budapest, HU;
Csaba Kuthi, Budapest, HU;
Aniko Gere, Budapest, HU;
Assignee:
Richter Gedeon Vegyeszeti Gyar Rt., Budapest, HU;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C07D / ;
U.S. Cl.
CPC ...
514283 ; 546 51 ;
Abstract
The invention relates to the preparation of cis and trans stereoisomers of racemic and optically active eburnamenine derivatives of the general formula (Ia) ##STR1## or (Ib), ##STR2## wherein R.sub.1 stands for a C.sub.1-4 alkyl group; and