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:
May. 11, 2021
Filed:
Nov. 16, 2018
Applicant:
Medichem S.a., Sant Joan Despí, ES;
Inventors:
Zhu Bin, Jiangsu, CN;
Rao Lingxiang, Jiangsu, CN;
Jordi Puig Serrano, Canet d'Adri, ES;
Ernesto Durán López, Castellbisbal, ES;
Assignee:
Medichem S.A., Sant Joan Despi, ES;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 405/06 (2006.01); B01J 23/44 (2006.01); C07D 217/06 (2006.01);
U.S. Cl.
CPC ...
C07D 405/06 (2013.01); B01J 23/44 (2013.01); C07D 217/06 (2013.01);
Abstract
The present invention relates to a process for preparing lifitegrast or a salt thereof, wherein the process comprises hydrogenation of compound II in a mixture comprising at least one solvent selected from the group consisting of acetonitrile, a ketone solvent, an ester solvent and a mixture thereof, preferably acetonitrile.