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:
Jul. 09, 2013
Filed:
Jun. 02, 2011
Hitesh Batra, Herndon, VA (US);
Raju Penmasta, Ashburn, VA (US);
Vijay Sharma, Olney, MD (US);
Sudersan M. Tuladhar, Silver Spring, MD (US);
David A. Walsh, Spotsylvania, VA (US);
Hitesh Batra, Herndon, VA (US);
Raju Penmasta, Ashburn, VA (US);
Vijay Sharma, Olney, MD (US);
Sudersan M. Tuladhar, Silver Spring, MD (US);
David A. Walsh, Spotsylvania, VA (US);
United Therapeutics Corporation, Silver Spring, MD (US);
Abstract
The present invention is directed to a novel method for preparing a synthetic intermediate for treprostinil via a stereoselective alkyne addition reaction. Also described are methods of preparing treprostinil comprising the alkyne addition reaction described herein as well as novel intermediates useful for synthesis prostacyclin derivatives, such as treprostinil.