Process for the resolution of threo-3-[(2-aminophenyl)-thio]-2-hydroxy-3-(4-methoxy-phenyl)propionic acid
US5292933A · kind A · utility
2Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1991 |
| Grant date | Mar 8, 1994 |
| Priority date | — |
| Expiry date | Apr 9, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C319/28
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a novel process for the resolution of an acid mixture (hereinafter: threo acid mixture) containing (+)-threo-3-[(2-aminophenyl)thio]-2-hydroxy-3-(4-methoxyphenyl)-propionic acid [hereinafter: (+)-threo acid]and (-)-threo-3-[(2-aminophenyl)thio]-2-hydroxy-3-(4-methoxyphenyl)-propionic acid [hereinafter: (-)-threo acid].
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.