http://rdf.ncbi.nlm.nih.gov/pubchem/patent/ES-212628-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3395c5cb958d81965344886b0ca92581 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J41-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J75-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J41-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J75-00 |
| filingDate | 1953-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1955-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | ES-212628-A1 |
| titleOfInvention | A PROCEDURE FOR THE PURIFICATION AND ISOLATION OF KETOSTEROIDS FROM MIXTURES THAT CONTAIN THEM |
| abstract | A procedure for the purification and isolation of ketosteroids from mixtures containing them by applying the benzyl hydrazones mentioned in the description, a procedure that is especially characterized by the following points considered separately or in combination: a) consists in reacting the benzyl hydrazide on a solution of said mixture in a suitable solvent, thus selectively precipitating the benzyl hydrazone of a ketosteroid in separating this benzyl hydrazone from the benzyl hydrazones that have been dissolved and from the other components of the mixture and in regenerating the ketosteroid from this hydrazone; b) the reaction It is carried out hot or cold; c) said solvent is a neutral solvent such as methanolel isopropanolel oioxane or benzene; d) the reaction is carried out in the presence of an acidic agent; e) the regeneration of the ketosteroid from the hydrazone is carried out by acid hydrolysis or by permutation functions onal by means of an aldehyde or a ketone; f) said ketosteroid is the estrone, an ester of cortisone, an ester of deoxycorticosterone, the cis-testosterone, a 21-ester of 31120-triceto-1721-dihydroxy preganan or nor-cholestenolone. |
| priorityDate | 1952-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.