| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b4dae7331034b6b26116b7c2f7acb115 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J21-006
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J13-007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J41-0088
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J33-007 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J41-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J33-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J21-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J13-00 |
| filingDate |
1976-04-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1977-11-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5e76dd9e5064ca88b05bf70f11a458dc
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0d64bb04f5304d27e00227040aec81c8 |
| publicationDate |
1977-11-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4059575-A |
| titleOfInvention |
Process for the preparation of 17(20)ene-21-steroid aldehydes |
| abstract |
There is disclosed a process for the efficient conversion of 17-α-ethynyl 17-β- hydroxy steroids into the corresponding 17(20) αβ-unsaturated 21-steroid aldehydes. The process comprises the sequential steps of reacting the ethynyl alcohol with a diloweralkylformamide dilower-alkylacetal, suitably dimethylformamide diethylacetal, to form the corresponding 16,20 diene-21-diloweralkylamine which is then hydrolyzed to form the corresponding 17(20)-ene-21-steroid aldehyde. |
| priorityDate |
1976-04-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |