| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_21977e40c08969f3e950eb43ecafe0cb |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D317-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C405-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C69-738
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D407-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-935
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C59-90 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-738
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D407-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C59-90
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-94
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C405-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-30 |
| filingDate |
1992-09-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1996-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9a93ce243bc4c79fff97d28af65e3583
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e016486248503993114558a3834ec5ec |
| publicationDate |
1996-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2077418-C |
| titleOfInvention |
Process for production of prostaglandin intermediates |
| abstract |
The present invention is directed to improving the isomer ratio of a cis-isomer as compared to the corresponding trans-isomer with respect to the 5-6 double bond in the production of prostaglandins. The improvement is achieved when a lactol is reacted with an ylide to cause simultaneous formation of the 5-double bond and an .alpha.-chain, whereby the ylide generated from a phosphonium salt with a potassium base, and a solvent which is liquid at the reaction temperature and has a dipole moment of 0.3 to 3.0D are used. |
| priorityDate |
1991-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |