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:
Apr. 03, 2018
Filed:
Nov. 19, 2015
Applicant:
Merck Patent Gmbh, Darmstadt, DE;
Inventors:
David Maillard, Darmstadt, DE;
Andreas Waechtler, Darmstadt, DE;
Jeremy Maurin, Lieuran-Cabrieres, FR;
Ewgenij Wakaresko, Fischbachtal, DE;
Christian Jasper, Seligenstadt, DE;
Assignee:
Merck Patent GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
C07D 487/04 (2006.01); C07D 471/04 (2006.01); C07D 217/14 (2006.01); C07C 59/64 (2006.01); C07C 59/84 (2006.01);
U.S. Cl.
CPC ...
C07D 471/04 (2013.01); C07C 59/64 (2013.01); C07C 59/84 (2013.01); C07D 217/14 (2013.01); C07B 2200/07 (2013.01);
Abstract
The present invention relates to methods for the production of enantiopure or enantioenriched Praziquantel precursors and to methods for the production of enantiopure or enantioenriched Praziquantel comprising the methods for the production of the Praziquantel precursors. The present invention further relates to compounds or intermediates useful in such methods.