Separation technique for a mixture of (6RS)-diastereoisomers of an ammonium salt of N.sup.5 -methyl-5,6,7,8-tetrahydrofolic acid into single (6R) and (6S)-diastereoisomers
US5194611A · kind A · utility
12Cited by
7References
15Claims
0Family size
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Key dates
| Filing date | Apr 11, 1991 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Apr 11, 2011 |
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.