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:
Oct. 02, 1984
Filed:
Jun. 11, 1982
Applicant:
Inventors:
Csaba Szantay, Budapest, HU;
Lajos Szabo, Budapest, HU;
Gyorgy Kalaus, Budapest, HU;
Janos Kreidl, Budapest, HU;
Laszlo Czibula, Budapest, HU;
Gyorgy Visky, Budapest, HU;
Andras Nemes, Budapest, HU;
Maria Farkas nee Kirlyak, Budapest, HU;
Assignee:
Richter Gedeon Vegyeszeti Gyar Rt., Budapest, HU;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
546 70 ;
Abstract
A process is disclosed for the preparation of racemic cis or trans apovincaminic acid esters of the formula (I) ##STR1## and the corresponding optically active derivatives of the formulae (Ia) ##STR2## wherein R.sup.1 and R.sup.2 are identical or different alkyl groups having 1 to 6 carbon atoms. Apovincaminic acid alkyl esters are well-known vasodilating compounds.