| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_59e1d955a7b1560dc68cf7fd800e8fac |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-55 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J71-0042
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J71-001
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J9-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C401-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C401-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J9-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J71-00 |
| filingDate |
1993-11-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a84b6b89cff338fa0cd97b68f4a8b9e2 |
| publicationDate |
1995-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
EP-0671411-A1 |
| titleOfInvention |
Process for producing provitamin d compound |
| abstract |
A process for producing a compound represented by general formula (II) by the reaction of an epoxy compound represented by general formula (I) with an alcohol under a basic condition, wherein R₁ represents hydrogen or a protective group; R₂ represents hydrogen or hydroxy; R₃, R₄, R₅ and R₆ represent such groups that a pair of R₃ and R₄ and a pair of R₅ and R₆ form each a double bond, or a pair of R₄ and R₅ forms a double bond while R₃ and R₆ are bonded to a dienophile capable of protecting conjugated double bonds; and R₇ represents lower alkyl, cycloalkyl or optionally protected lower hydroxyalkyl. This process is one for synthesizing an intermediate of a vitamin D derivative in an imptroved yield without the necessity for complicated procedure of protection and is also suited for mass production. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7323580-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6410523-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0924199-A4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0924199-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1070704-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6448421-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5883271-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6831183-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7235679-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1070704-A4 |
| priorityDate |
1992-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |