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:
Jan. 17, 2012
Filed:
Mar. 24, 2008
Applicants:
Vinod Kumar Kansal, Haryana, IN;
Brijnath P. Chaurasia, Uttar Pradesh, IN;
Anand Prakash Tiwari, Uttar Pradesh, IN;
Shivaji Haribhau Shelke, Maharashtra, IN;
Inventors:
Vinod Kumar Kansal, Haryana, IN;
Brijnath P. Chaurasia, Uttar Pradesh, IN;
Anand Prakash Tiwari, Uttar Pradesh, IN;
Shivaji Haribhau Shelke, Maharashtra, IN;
Assignee:
Teva Pharmaceutical Industries Ltd., Petah Tiqva, IL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 247/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Provided are syntheses of (S)-(+)-3-(aminomethyl)-5-methylhexanoic acid, (S)-Pregabalin via a chiral intermediate of the following formula 4 wherein Ar is a Caromatic group, R is a straight or branched Calkyl, ester, or carboxylic acid, and Ris a straight or branched Calkyl, aralkyl, or substituted aralkyl.