http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0218415-B1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D417-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F5-025 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D317-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D317-30 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D417-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D405-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F5-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D463-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D477-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-14 |
| filingDate | 1986-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1990-08-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1990-08-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0218415-B1 |
| titleOfInvention | Process for intermediates to 1-carbapenems and 1-carbacephems |
| abstract | A stereoselective process for chiral intermediates to 1-carbapenem and 1-carbacephalosporins is provided comprising the use of an N-acyl(4R)substituted-1,3-thiazolidine-2-thione as a chiral auxiliary in boron enolate mediated aldol condensation with a protected-β-keto ester aldehyde. Benzyl 3,3-(ethylenedioxy)-4-formylbutyrate is condensed with the boron enolate formed with nbutyryl (4R)-methoxycarbonyl-1,3-thiazolidine-2-thione to provide benzyl 3,3-ethylenedioxy-(5R)-hydroxy-6-[(4R)-methoxycarbonyl-1,3-thiazolidine-2-thione-3-ylcarbonyl]octanoate. Displacement of the thiazolidine-2-thione chiral auxiliary moiety with an O-alkyl, O-acyl or O-aralkyl hydroxyamine provides the corresponding chiral intermediate as the hydroxamate. |
| priorityDate | 1985-09-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 181.