http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102701939-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b6b95ce348d8c4ed5f37ed1b373ef313 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-84 |
| filingDate | 2012-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2014-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e7c62783547b76b5e9fa1d91eef23ba3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a97b522489b1282efea75a5f1bb71a5d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_fb3a4ea52f1341e25868200fe6b66e18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2287f3f6ebc3071aadcb580ff1dbe755 |
| publicationDate | 2014-08-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-102701939-B |
| titleOfInvention | Method for preparing xanthoxyline from natural blumea balsamifera powder |
| abstract | The invention discloses a method for preparing xanthoxyline from natural blumea balsamifera powder, which comprises the steps that the blumea balsamifera powder is put in a container, aqueous alkali with the mass concentration of 0.1-20% is added according to the weight-to-volume ratio of 1:1g/ml-1:20g/ml, and is stirred to fully dissolve the blumea balsamifera powder, and then filtrate is obtained after filtration; the pH value of the filtrate is regulated to 1-4 with acid, an organic solvent is adopted for extraction, and a crude product of xanthoxyline of the organic solvent is recycled; and the crude product of xanthoxyline is recrystallized repeatedly to obtain the high-purity xanthoxyline. The blumea balsamifera powder is an extractive obtained by heating to sublimate blumea balsamifera leaves and is the raw material for producing blumea balsamifera tablets (L-borneol) in the medical industry. In the method disclosed by the invention, physicochemical properties of the xanthoxyline are fully utilized to obtain the high-purity xanthoxyline from the blumea balsamifera powder, and the follow-up preparation of the blumea balsamifera tablets is not affected. The blumea balsamifera plant resource is comprehensively utilized, the method has fewer operation steps and is easy and feasible, the cost is low, a product has high yield and stable quality, the use of a toxic solvent is avoided, the production safety is improved, and industrial production is facilitated. |
| priorityDate | 2012-06-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 67.