http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-439720-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_da54f7ebbd2d9d8a82f92aca4d1b4e48 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J7-002 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J7-00 |
| filingDate | 1975-07-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1977-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-439720-A1 |
| titleOfInvention | PROCEDURE FOR THE PREPARATION OF 18-METHYL-19-NOR-20-CE-TOPREGNANS. |
| abstract | Procedure for the preparation of 10-methyl-19-nor-20-ketopregnanes of the general formula ** (See formula) ** where R1 and R2 signify oxygen, R1 signifies hydrogen and R2 signifies hydroxy or R1 signifies hydroxy and R2 signifies hydrogen, and R3 signifies oxygen or two hydrogen atoms and the hydrogen atom in position 5 can be located in position α or β, characterized in that, in liquid ammonia, they are treated with an alkali or alkaline earth metal, preferably lithium, 17β-acetoxy-18-methyl-19-nor-17α-pregnanes of the general formula ** (See formula) ** where (see graph) means a single CC bond or a double CC bond, R3 has the meanings indicated above and a hydrogen atom in position 5 may be located in position α or β and eventually a jointly reduced ketone is retro-oxidized, or hydrogenated. -keto-18-methyl-19-nor-unsaturated pregnanes of the general formula ** (See formula) ** where R3 has the meanings indicated above, (see graph) means a single DC bond or a dable CC bond and the 5-position hydrogen atom may be located in the α or β position and eventually the 3-keto group is selectively reduced. (Machine-translation by Google Translate, not legally binding) |
| priorityDate | 1974-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.