http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109369382-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-47 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C65-05 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C65-19 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-47 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-48 |
| filingDate | 2018-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109369382-B |
| titleOfInvention | A method for preparing ginkgolic acids |
| abstract | The invention discloses a preparation method of ginkgolic acid components, which adopts an on-line collection and circulation high-speed counter-current chromatography mode to separate and purify to prepare a ginkgolic acid monomer with the purity higher than 95%; and finally, performing preparative liquid chromatography separation on the two ginkgolic acid monomers which are not completely separated. The conditions used for the high-speed counter-current chromatographic separation are as follows: the solvent system was n-heptane: ethyl acetate: methanol: acetic acid is 5:4:1:1, the column volume of the high-speed countercurrent chromatography is 300mL, the sample loading amount is 500mg, the rotating speed is 800 r/min, the upper phase is a stationary phase, the lower phase is a mobile phase, the flow rate is 2.0mL/min, and the detection wavelength is 254 nm. The method has the advantages of low cost, simple operation, high efficiency and capability of separating and preparing the ginkgolic acid monomer compound with the purity of more than 95 percent from the ginkgo nut peel in a large batch. |
| priorityDate | 2018-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.