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:
Jun. 02, 2020
Filed:
Sep. 29, 2015
Applicant:
Nucana Plc, Edinburgh, GB;
Inventor:
Hugh Griffith, Edinburgh, GB;
Assignee:
NuCana plc, Edinburgh, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07H 19/10 (2006.01);
U.S. Cl.
CPC ...
C07H 19/10 (2013.01); C07B 2200/13 (2013.01);
Abstract
Disclosed are methods of separating the diastereoisomers of gemcitabine-[phenyl-(benzoxy-L-alaninyl)]-phosphate (NUC-1031), or salts thereof, using crystallisation. In particular, crystallisation from isopropyl alcohol provides gemcitabine-[phenyl-(benzoxy-L-alaninyl)]-(S)-phosphate in high diastereoisomeric purity: Also disclosed is a crystalline form of gemcitabine-[phenyl-(benzoxy-L-alaninyl)]-(S)-phosphate. Disclosed are methods of isolating gemcitabine-[phenyl-(benzoxy-L-alaninyl)]-(R)-phosphate in high diastereoisomeric purity: