Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d202e9e866984fe229f6facc38f1d740 |
classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-55 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D501-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D501-06 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-46 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K- http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-545 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-57 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D- http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-34 |
filingDate |
1974-11-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationDate |
1977-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
GB-1480757-A |
titleOfInvention |
Preparation of 7-acylamino cephalosporin derivatives |
abstract |
Cephem derivatives of the following formula <IMAGE> in which the substituents are defined in Claim 1, are prepared by a novel process. In this process, an appropriate 7-acylamidocephem derivative having a protected carboxyl group in the 4-position is reacted in the presence of a molecular sieve with an acylating agent donating the desired acyl radical. The original acyl group is removed from the initially resulting 7-diacylamidocephem derivative. The free acid is obtained by removal of the protective group R'', which preferably represents an easily removable ester group. The said compounds are used as antibiotics. |
priorityDate |
1973-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |