Processes for production of optically active 4-halo-3-hydroxybutyric acid esters
US5559030A · kind A · utility
121Cited by
4References
8Claims
0Family size
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Key dates
| Filing date | Jan 12, 1994 |
| Grant date | Sep 24, 1996 |
| Priority date | — |
| Expiry date | Jan 12, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/911
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A microorganism that is capable of acting on a 4-halo-acetoacetic acid ester shown by the general formula: ##STR1## wherein X represents a halogen atom and R represents an optionally substituted alkyl group, alkenyl group, cycloalkyl group or aryl group, to produce an optically active 4-halo-3-hydroxybutyric acid ester or a preparation thereof is permitted to act on said 4-halo-acetoacetic acid ester and the product optically active 4-halo-3-hydroxybutyric acid ester is harvested. Thus, the desired optically active 4-halo-3-hydroxybutyric acid ester of high optical purity can be produced with commercial efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.