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. 24, 2020
Filed:
Oct. 25, 2019
Applicant:
Hameln Pharma Plus Gmbh, Hameln, DE;
Inventors:
Pavol Valachovic, Pezinok, SK;
Janka Králová, Pezinok, SK;
L'ubo{hacek over (s)} Slí{hacek over (z)}ik, Senec, SK;
Norbert Varga, Modra, SK;
Assignee:
HAMELN PHARMA GMBH, Hameln, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 211/98 (2006.01);
U.S. Cl.
CPC ...
C07D 211/98 (2013.01);
Abstract
A new intermediate for synthesizing 1-substituted-4-[phenyl(propanoyl)amino]piperidine-4-carbonitrile derivatives is laid open. Specifically set out is a method for use of this intermediate in the preparation of remifentanil. The enclosed shorter process offers a greater yield of products with higher purity as compared to methods reported in the prior art.