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:
Jan. 31, 1984
Filed:
Aug. 20, 1982
Applicant:
Inventors:
Csaba Szantay, Budapest, HU;
Lajos Szabo, Budapest, HU;
Gyorgy Kalaus, Budapest, HU;
Tibor Keve, Budapest, HU;
Lajos Dancsi, Budapest, HU;
Janos Galambos, Erd, HU;
Ferenc Vezekenyi, Budapest, HU;
Tibor Acs, Budapest, HU;
Assignee:
Richter Gedeon Vegyeszeti Gyar Rt, Budapest, HU;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546 70 ; 424256 ;
Abstract
The invention relates to a new process for the preparation of alkoxyvincaminic acid esters of the formula (I) ##STR1## and/or alkoxyapovincaminic acid esters of the formula (II) ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 independently stand for alkyl groups having from one to 6 carbon atoms. The compounds of the formulae (I) and (II) are pharmaceutically active, thus some of them show psychostimulant activity.