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. 30, 2017
Filed:
Oct. 31, 2014
Applicant:
Sun Pharma Advanced Research Company, Maharashtra, IN;
Inventors:
Anil Kumbhani, Baroda, IN;
Biswajit Samanta, Baroda, IN;
Kilaru Srinivasu, Baroda, IN;
Thennati Rajamannar, Baroda, IN;
Assignee:
SUN PHARMA ADVANCED RESEARCH COMPANY, Mumbai Maharashtra, IN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 271/00 (2006.01); C07C 271/28 (2006.01); C07C 269/02 (2006.01); C07C 213/08 (2006.01);
U.S. Cl.
CPC ...
C07C 271/28 (2013.01); C07C 213/08 (2013.01); C07C 269/02 (2013.01);
Abstract
The present invention relates to novel carbamate intermediate of formula (II), process for its preparation and process for its conversion into 3-[(1R,2R)-3-(dimethylamino)-1-ethyl-2-methylpropyl]phenol, tapentadol and its pharmaceutically acceptable salts.