| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_dfd617dc43a4c986d2dd81e4cb39d9dd |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-55 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D471-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P35-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D491-22 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D491-22 |
| filingDate |
1995-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2003-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d8e77864b398babd1372047e1893f35d
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_58aaad7a932697f7ae4cca0c7873191c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_832c4308b78be4fce27fdd5bbb4bb8cd
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_684b3a02002ad5e3cfa008d6cfdcef42
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_41bcf2a7e375ec2d60b3a329f0421c91 |
| publicationDate |
2003-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-6504029-B1 |
| titleOfInvention |
Condensed-hexacyclic compounds and a process therefor |
| abstract |
Disclosed are a process for the preparation of a compound represented by the formula (1), which comprises treating a compound represented by the formula (2) with methanesulfonic acid and then subjecting the thus-treated compound to recrystallization; and Compound (1) so obtained.This Compound (1) is free of hygroscopicity, excellent in filterability and solubility and easy in handling. Furthermore, according to the preparation process of the present invention, an unnecessary isomer can be converted into the target one and separation of the target isomer can be conducted easily. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11555019-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-11634508-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2003109460-A1 |
| priorityDate |
1995-04-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |