http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104193758-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-04 |
| filingDate | 2014-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-05-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104193758-B |
| titleOfInvention | A kind of preparation method who extracts wedelolactone class monomeric compound from eclipta |
| abstract | The invention discloses a kind of preparation method who extracts purifying wedelolactone class monomeric compound from From Eclipta Prostrata L, be ground into eclipta powder, add alcohol-aqueous acid to carry out multi-stage counter current extraction extraction, after extracting liquid filtering, reduced pressure concentration obtains wedelolactone crude product; Macroporous absorbent resin separation and purification, gradient elution, collects eluent, obtains respectively respectively wedelolactone and demethyl wedelolactone after reduced pressure concentration. Utilize wedelolactone compounds under mild acid conditions, to there is good stable physico-chemical property; alcohol-aqueous acid is protected the active ingredient of eclipta in the time extracting; greatly improve the recovery rate of active ingredient in eclipta medicinal material; macroporous absorbent resin can be recycled; using ethanol-water solution as solvent; economical and practical; can obtain easily and efficiently high-purity wedelolactone and demethyl wedelolactone monomeric compound; each monomeric compound purity reaches more than 95%; technique is simple, easy and simple to handle; cost is low, is suitable for batch production. |
| priorityDate | 2014-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.