| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_df53cdf55050f3f4580e1931741875b7 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D501-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D513-04 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D277-74
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D513-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-36
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D501-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D521-00 |
| filingDate |
1985-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3195543bf00323d5fade630024ddb40b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_35dac6548c66e8ef07aeb2cb3c2f66f2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_609ac395d8a8e74bbefb391f8e29a54e |
| publicationDate |
1991-03-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
HU-202537-B |
| titleOfInvention |
Process for producing cefemcarboxylic acid derivatives |
| abstract |
The present invention relates to a novel process for the preparation of compounds of formula (Ib) wherein R 2 is an alkali metal cation and R 3 is -S-Y wherein Y is a tetrazolyl group which may be substituted with C 1-4 alkyl or sulfomethyl. The process consists in removing formyl from formyl-containing compounds as a hydroxyl protecting group in an acidic medium using a lower alcohol. Ί * H ~ C-ORg Scope of the description: 3 pages, Figure 1 (lb) HU 202 537 B -1- |
| priorityDate |
1984-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |