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:
Feb. 06, 2024
Filed:
May. 03, 2021
Applicant:
Unichem Laboratories Ltd, Maharashtra, IN;
Inventors:
Dhananjay G. Sathe, Maharashtra, IN;
Arijit Das, Goa, IN;
Sanjay Raikar, Goa, IN;
Yashwant S. Surve, Maharashtra, IN;
Bhushan S. Pandit, Maharashtra, IN;
Assignee:
Unichem Laboratories Ltd, Mumbai, IN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 413/14 (2006.01); C07D 413/10 (2006.01); A61K 31/5377 (2006.01); A61P 7/02 (2006.01);
U.S. Cl.
CPC ...
C07D 413/14 (2013.01); C07D 413/10 (2013.01); C07B 2200/13 (2013.01);
Abstract
The present invention relates to the novel key intermediate, 4-{4-[(SS)-(Aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]-phenyl}-morpholin-3-one perchlorate, m the synthesis of rivaroxaban. The invention further relates to the crystalline form of novel intermediate, the process to prepare the novel intermediate and method of preparing rivaroxaban using this novel intermediate. The invention provides an improved and efficient process for preparation of Rivaroxaban.