Predicate |
Object |
assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a717ea5b2ac78ac329ab3a9659d834d2 |
classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D501-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D501-18 |
classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-06 |
filingDate |
1976-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate |
1977-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d1cb7081fdbab3fdc275f5ad3f0030b7 |
publicationDate |
1977-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber |
US-4051131-A |
titleOfInvention |
Intermediates for preparing cephalosporins |
abstract |
DELTA 3-Cephalosporins are prepared by reacting novel diorganodihalosilane or monorganodihalosilane derivatives of 7-aminocephalosporanic acid ("7ACA") and 7-amino-desacetoxycephalosporanic acid ("7ADCA") with known acylating agents followed by hydrolysis or alcoholysis to produce DELTA 3-cephalosporins with useful antibiotic activity. The dialkyldihalosilane derivatives are prepared by adding a base such as triethylamine slowly to a mixture of 7ACA or 7ADCA and a dialkyldihalosilane. |
isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4139702-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4316017-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4316016-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4223135-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4405782-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4346219-A |
priorityDate |
1972-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type |
http://data.epo.org/linked-data/def/patent/Publication |