| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_da54f7ebbd2d9d8a82f92aca4d1b4e48 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J53-005
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J17-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J17-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J53-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J51-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J75-00 |
| filingDate |
1984-08-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ef66c35e252d0092db18f75273665da3 |
| publicationDate |
1985-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0136465-A2 |
| titleOfInvention |
Process for the preparation of 17-alpha-acetoxy-1-alpha, 2-alpha-methylene-pregna-4,6-diene-3,20 dione |
| abstract |
It is a multi-stage process for the preparation of 17a-acetoxy-1.2-methylene-4.6-pregnadiene-3.20-dione from 17a-hydroxy-1.4.6-pregnatrien-3.20-dione by ketalization of the 20-keto group, followed by methylenation in the 1.2-position described with trimethylsulfoxonium iodide, hydrolysis and simultaneous acetylation of the 17α-hydroxy group. |
| priorityDate |
1983-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |