| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D473-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D473-06 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D473-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D473-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-52 |
| filingDate |
1993-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1998-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f996cb623c490d3732bf4d1c11e59ab5
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d609f61ec4ba077be651047f6376594a |
| publicationDate |
1998-07-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
RU-2114847-C1 |
| titleOfInvention |
Method of synthesis of 3,7-dialkylxanthines |
| abstract |
FIELD: organic chemistry. SUBSTANCE: 3,7-dialkylxanthines are synthesized by alkylation of the corresponding 3-alkylxanthines in two-phase mixture in the presence of quaternary, ammonium and/or phosphonic base and linear simple polyester. Synthesized compounds are used in medicine as intermedium substances for synthesis of drugs. EFFECT: high yields and purity of compounds. 8 cl, 6 ex |
| priorityDate |
1992-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |