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:
Apr. 22, 2014
Filed:
Sep. 16, 2010
Siva Rama Prasad Vellanki, Hyderabad, IN;
Arabinda Sahu, Hyderabad, IN;
Aravind Kumar Katukuri, Hyderabad, IN;
Vikram Vanama, Hyderabad, IN;
Satishbabu Kothari, Hyderabad, IN;
Venkata Suryanarayana Ponnekanti, Hyderabad, IN;
Debashish Datta, Hyderabad, IN;
Siva Rama Prasad Vellanki, Hyderabad, IN;
Arabinda Sahu, Hyderabad, IN;
Aravind Kumar Katukuri, Hyderabad, IN;
Vikram Vanama, Hyderabad, IN;
Satishbabu Kothari, Hyderabad, IN;
Venkata Suryanarayana Ponnekanti, Hyderabad, IN;
Debashish Datta, Hyderabad, IN;
Other;
Abstract
A process for the preparation of Darunavir comprises the reacting of 4-amino-N-(2R, 3S) (3-amino-2-hydroxy-4-phenylbutyl)-N-isobutyl-benzenesulfonamide with (3R, 3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol derivative in N-methyl-2-pyrrolidinone and isolating the resulting Darunavir. The process yields Darunavir with a very low level of the difuranyl impurity.