http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-285357-A5
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b172e4dc6f8b115773eb99a04e8260f6 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D519-02 |
| filingDate | 1985-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0190d1b8cff648c155e5cbe14917ff26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d313791b376b36c8693aa6937cbb7f1b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0f06191c5683ae92d4440d93ac6343ee |
| publicationDate | 1990-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-285357-A5 |
| titleOfInvention | PROCESS FOR OBTAINING EPIMER-FREE ALPHA-ERGOKRYPTIN |
| abstract | The present invention includes a method for recovering epimer-free α-ergokryptin from a mixture of α- and β-ergokryptinine ergocorninin enriched with up to 79% α-ergokryptinin by the method of re-epimerization. The object of the invention is achieved by reepimerization the pharmacologically inactive a- and b-ergokryptinine ergocorninine mixture optionally in an acetonic solution with the addition of alcoholic phosphoric acid and alcohol or in methanolic phosphoric solution with addition of methanol after heating the solution to 50C and leaving to stand at room temperature in epimer-free a-ergokryptinphosphat over. After release of the a-ergokryptin base from the ergocryptophosphate and crystallization as the a-ergokryptine aromatic adduct, an a-ergocryptine with a purity of at least 97% is obtained. |
| priorityDate | 1985-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.