| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1374dd16777534b65ad4422333245af8 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-83
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F7-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-707
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-52 |
| filingDate |
1980-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5c247b3bab7eff298cd96066158853b2
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5a3e031c2c78c88ee6aed81c1b9b7b78
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_08cc131ed8a82d49cd5d79f8e408787e
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1216d44ad651531644e2ea82b190b5c0
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a003e516b0070f4851f6e5ac45810acf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bc73a53703b5cdb6582ae13ea7614f2c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_45b45e663ab3ee9bb0604b862f44baa5 |
| publicationDate |
1982-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-S5714560-A |
| titleOfInvention |
Novel cyclopentene derivative and its preparation |
| abstract |
NEW MATERIAL:Compounds of formula I (R is H, lower alkyl, aminium ion of optically active amine; X and Y incorporate to form oxo or one of them is H, the other is hydroxyl or protected hydroxyl; *shows that the carbon marked with* has S-configuration or R-configuration or their mixture in an arbitrary proportion). n EXAMPLE: 4-(o-Carboxylbenzoyloxy)-2-cyclopenten-1-one. n USE: Synthetic intermediate of prostaglandins. n PREPARATION: The reaction of dl-4-hydroxy-2-cyclopentn-1-one of formula II with phthalic anhydride of formula III is conducted in the presence of a base such as pyridine or colidine in a solvent such as carbon tetrachloride at -50W60°C to give the compound of formyla I where R is H, X and Y incorporate to form an oxo group. The starting material of formula II is obtained by brominating 2-methylfuran and treating the product with a phosphate buffer solution. n COPYRIGHT: (C)1982,JPO&Japio |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S63167907-U |
| priorityDate |
1980-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |