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:
Jan. 20, 1998
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Assignee:
Dibra S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544258 ;
Abstract
A process for the preparation, separation and purification of (6S) and (6R) diastereomers of folinic acid salts with at least dibasic amines is disclosed, which process comprises the hydrolysis of (6RS)-5,10-methenyl-5,6,7,8-tetrahydrofolic acid chloride hydrochloride with an at least dibasic amine and the subsequent separation of the diasteromeric salts.