Patent · US Expired

(6R)- and (6S)-diastereoisomers of an ammonium salts of N.sup.5 -methyl-5,6,7,8-tetrahydrofolic acid

US5382581A · kind A · utility

6Cited by

3References

13Claims

0Family size

Assignee

Sapec S.A. Fine Chemicals · CH

Inventors

Fabrizio Marazza · Sorengo, CH
Jean Jacques · Paris, FR

Key dates

Filing date	Nov 13, 1992
Grant date	Jan 17, 1995
Priority date	—
Expiry date	Nov 13, 2012

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61P35/00
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

There are described ammonium salts of N.sup.5 -methyl-5,6,7,8-tetrahydrofolic acid as well as processes for their preparation. These ammonium salts may be separated into the single (6R) and (6S)-diastereoisomers. The separated diastereoisomers may be transformed into the corresponding alkali metal or alkaline earth metal salts.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.