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:
Dec. 13, 2016
Filed:
Sep. 29, 2014
Hetero Research Foundation, Balanagar, Hyderabad, IN;
Bandi Parthasaradhi Reddy, Hyderabad, IN;
Kura Rathnakar Reddy, Hyderabad, IN;
Dasari Muralidhara Reddy, Hyderabad, IN;
Thungathurthy Srinivasa Rao, Hyderabad, IN;
Bandi Vamsi Krishna, Hyderabad, IN;
Hetero Research Foundation, , IN;
Abstract
The present invention provides processes for the preparation of i) Regorafenib (4-[4-({[4-chloro-3-(trifluoromethyl)phenyl]carbamoyl}amino)-3-fluorophenoxy]-N-methylpyridine-2-carboxamide, BAY 73-4506, Stivarga®) and its pharmaceutically acceptable salt thereof; ii) a crystalline solid of Regorafenib tosylate; iii) Regorafenib Polymorph I from Regorafenib tosylate, and iv) a pure 4-(4-amino-3-fluorophenoxy)-N-methylpicolinamide from 4-amino-3-fluorophenol and 4-chloro-N-methylpicolinamide in the presence of potassium tert-butoxide.