http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0089886-B1
Outgoing Links
Predicate | Object |
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classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P41-005 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-48 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B57-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P13-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B55-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P41-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C227-16 |
filingDate | 1983-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate | 1988-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationDate | 1988-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | EP-0089886-B1 |
titleOfInvention | Process for the preparation of a free alpha-l-amino acid |
abstract | This invention relates to a process for the preparation of free L alpha -amino acids by the complete conversion of their D antipodes taken individually or possibly in racemic mixtures. The process according to the present invention is characterized in that the D antipodes of an ester of said alpha -amino acid is racemized in the presence of a chemical catalyst formed by at least one aromatic aldehyde corresponding to the general formula: <IMAGE> (I) wherein: Ar represents an aromatic ring optionally containing a heteroatom, such as nitrogen, and B represents a basic function, to produce a mixture in dynamic equilibrium of the two forms D and L of said ester, the ester which is present in the L form is hydrolyzed enzymatically and irreversibly to produce the corresponding stereostable L alpha -amino acid, said stages of chemical racemization and of enzymatic hydrolysis being carried out under identical reaction conditions, and the free L alpha -amino acid is recovered. |
priorityDate | 1982-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 91.