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. 20, 2016
Filed:
Oct. 07, 2014
Applicant:
Council of Scientific and Industrial Research, Rafi Marg, New Delhi, IN;
Inventors:
Subhash Prataprao Chavan, Maharashtra, IN;
Prakash Narsing Chavan, Maharashtra, IN;
Assignee:
Council of Scientific and Industrial Research, New Delhi, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 211/36 (2006.01); C07D 513/04 (2006.01); C07D 233/32 (2006.01); C07D 235/02 (2006.01); C07C 269/04 (2006.01); C07C 269/06 (2006.01);
U.S. Cl.
CPC ...
C07D 513/04 (2013.01); C07C 211/36 (2013.01); C07C 269/04 (2013.01); C07C 269/06 (2013.01); C07D 233/32 (2013.01); C07D 235/02 (2013.01); C07C 2101/16 (2013.01);
Abstract
The present invention discloses an economic, simple, azide and aziridine complexity free process for the synthesis of osletamivir phosphate (Tamiflu) by stereospecific amidoalkylation of imidazothiazolone from easily available L-cysteine via Ramberg-Backlund reaction and Sharpless-Reich protocol.