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. 27, 1997
Filed:
Mar. 24, 1995
Applicant:
Inventor:
Douglas P Kjell, West Lafayette, IN (US);
Assignee:
Eli Lilly and Company, Indianapolis, IN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07H / ;
U.S. Cl.
CPC ...
536 285 ; 536 221 ; 536 283 ; 536 284 ; 536 2851 ; 536 2852 ; 536 2853 ; 536 2854 ; 549429 ; 549475 ;
Abstract
A process for the preparation of a 2-substituted-3,3-difluorofuran using diethyl ammonium sulfur trifluoride (DAST) and pyridine hydrogen fluoride. The process is particularly useful for producing a 2',2'-difluoronucleoside, particularly 1-(2',2'-difluoro-.beta.-D-arabinofuranosyl)cytosine (also known as 2'-deoxy-2',2'-difluorocytidine), a known antiviral and antitumor agent.
Kjell, Douglas. (1997). Process for the preparation of a 2-substituted 3,3-difluorofuran (U.S. Patent No. 5633367). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5633367
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile