| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2ca2e4410855da087e11bf3eea8933fa |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-55 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D501-18 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-18 |
| filingDate |
1980-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1982-06-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f31f72572a296b361b9f45f8addf12f5 |
| publicationDate |
1982-06-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4334065-A |
| titleOfInvention |
Cephalosporin intermediates |
| abstract |
7α-(Dimethylamidino)-3-cephem ester 1α-oxides represented by the formula ##STR1## wherein R is hydrogen or acetoxy and R 1 is a carboxy protecting group, are prepared via DBU epimerization of the corresponding 7β-isomer. When R is hydrogen the intermediates are useful in the preparation of the 7β-acylamino-7α-methoxy-1-oxa-β-lactam antibiotics, and when R is acetoxy the compounds are intermediates to 7β-acylamino-7α-methoxy-3-exomethylenecepham compounds. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5824801-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2017067870-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9759706-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4448720-A |
| priorityDate |
1980-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |