http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2004020652-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_46b9ca510a7d67b5a1c4667e5367ed2c http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3b98b4f6db4672b0fb161b26cfc89685 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P35-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P35-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C12P35-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P35-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P35-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C12P35-02 |
| filingDate | 2003-08-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ee8e12c8911653f0aae19d38229f9ebd |
| publicationDate | 2004-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | WO-2004020652-A2 |
| titleOfInvention | An enzymatic process for preparing beta-lactams |
| abstract | An enzymatic process under kinetical control for preparing ß-lactams, by coupling the 7-amino group of 7-ACA with the carboxylic function of TZH activated as methyl- or ethylester. The process comprises using a penicillin amidase or a-amino acid esterase as free enzyme or in any suitable immobilised form; applying at least 100 mmol/l 7-ACA, applying TZH activated as ester a 1 - 3 fold molar ratio, and adjusting the pH to 6.0 - 8.0 and the temperature to 0 - 30°C. For direct 3-processing of the enzymatically synthesised TZ-7-ACA with heterocyclic thiols in aqueous solution at pH 6.0 - 8.5 and 50 - 75°C a dark brown colour is formed. Surprisingly this can be avoided, if 7-ACA is removed almost completely, advantageously by salting out the 7-derivative of 7-ACA. In said process the heterocylic thiol is MMTD or 2MTD and the formed product is cefazolin or ceftezol. |
| priorityDate | 2002-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 324.