http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-888974-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d202e9e866984fe229f6facc38f1d740 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J75-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J75-00 |
| filingDate | 1959-06-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1962-02-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-888974-A |
| titleOfInvention | Steroids |
| abstract | 2,4 - Dibromo - 16a - methyl - pregnane - 17a ,21 - diol - 3,11,20 - trione 21 - acylate is prepared by reacting 16a -methyl-pregnane-17a ,21-diol-3,11,20-trione with a brominating agent, e.g. bromine. 16a - Methyl - 1,4 - pregnadiene - 17a ,21 - diol - 3,11,20 - trione 21 - acylate is prepared by dehydrobrominating the above 2,4-dibromo compound, e.g. with a tertiary amine such as dimethylaniline or collidine, and optionally hydrolysing the 21-ester group to form the corresponding free 21-hydroxy compound. The 21-ester group may be derived from acetic, propionic, butyric or benzoic acid. Detailed examples are given. Specification 877,086 is referred to. |
| priorityDate | 1958-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.