| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b10c5a760d03428721bb801301dd634c |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2603-24 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P9-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P19-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P19-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P25-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P29-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-95
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K36-48
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-235
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61P29-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61P9-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61P19-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61P19-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61P25-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-00 |
| filingDate |
1992-12-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1999-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_84db334a678a10ed82411a9e0e442c03
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76abef75d6cbbe7be962bca3d1807bf0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ac08f5adaf62c65ba5c05ed90fdbdf10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_db17c22af7b0f8d27236749863b679b3
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_91f545980d3360e5c2004bd59fc05287 |
| publicationDate |
1999-07-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
TW-364902-B |
| titleOfInvention |
Process for the preparation of diacetylrhein |
| abstract |
The present invention provides a process for the preparation of diacetylrhein which is substantially free of aloe-emodin components, wherein (A) rhein-9-anthrone-8-glucoside containing aloe-emodin components is subjected to a liquid-liquid partitioning of the compounds obtained is carried out between a polar organic solvent which is only partly miscible with water and an aqueous phase, (B) the rhein-9-anthrone-8-glucoside contained after the partitioning in the aqueous phase is oxidized to rhein-8-glucoside, (C) the glucose residue in the 9-position of the rhein-8-glucoside is split off in an acidic medium and (D) the rhein obtained is acetylated and the diacetylrhein recovered. The present invention is also concerned with diacetylrhein obtainable by this process and with pharmaceutical compositions containing it. |
| priorityDate |
1991-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |