| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5ace6b22056a2824f77aac332b85adba |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P15-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61P15-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D295-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D487-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D487-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D487-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D-
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D487-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-519
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-54
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61P15-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D295-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D295-26
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D295-21
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D295-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D401-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D401-02 |
| filingDate |
1999-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2004-06-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e0d60929f492177b73fad39e0112cdba
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_399cd7fa04ca3ee3f25724d75d6f7c55 |
| publicationDate |
2004-06-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
TW-589314-B |
| titleOfInvention |
Process for preparation of pyrazolo[4,3-d]pyrimidin-7-ones and intermediates thereof |
| abstract |
A process is provided for the preparation of a compound of formulae (IA) (sidenafil/Viagra(TM)) and (IB) comprising reacting a compound of formula (IIA) and (IIB) respectively in the presence of -OR, wherein R in the case of formation of compound (IA) is CH2CH3 and R in the case of formation of compound (IB) is CH2CH2CH3, where X is a leaving group. |
| priorityDate |
1998-10-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |