| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_bb75b0b19820e3833ebdcb31603b242b |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D505-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D205-085 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D505-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D205-085
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D205-08 |
| filingDate |
1978-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_390e5478537b88a213446aa2a5e69d44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7408cd80b24107f1f29add97a4a59780
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bee91444938988e572856c74af1ae334
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d37e4b10779043f9151358bed87957f3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5e393ac3df83b091b79e63ca2055395c |
| publicationDate |
1981-10-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
HU-177509-B |
| titleOfInvention |
Process for preparing new azetidinone derivatives |
| abstract |
alpha -[3(R)-Substituted amino-4(R)-substituted alkoxy-2-oxo-azetidin-1-yl]- alpha -isopropenylacetate (Ia) and alpha -[3(R)-substituted amino-4(R)-substituted alkoxy-2-oxo-azetidin-1-yl]- alpha -isopropylideneacetate (Ib) prepared from (1R,5S)- alpha -(3-substituted-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]hept-2-en-6-yl)- alpha -isopropenylacetate or (1R,5S)- alpha -(3-substituted-7-oxo-4-oxa-2,6-diazabicyclo-[3.2.0]hept-2-en-6-yl)- alpha -isopropylideneacetate with a primary alcohol in the presence of an acid. The products are useful intermediates for preparing oxadethiacephalosporins. |
| priorityDate |
1977-02-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |