http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0499763-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_39277fc0fe76ac7469ebec0d93d7d8ce |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-55 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C401-00 |
| filingDate | 1990-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c94e9d631464cf776700a674442a0d91 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_399382a1a797615f2d169f0ed8914308 |
| publicationDate | 1992-03-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0499763-A |
| titleOfInvention | Production of vitamin d2 and d3, or active type vitamin d2 and d3 or derivative thereof and intermediate thereof |
| abstract | PURPOSE: To obtain the title compound in high yield by reacting 22,23-seco-7,8- dihydroxyvitamin D or a derivative thereof with an alkylating agent and then eliminating 7,8-dihydroxy component. n CONSTITUTION: A compound shown by formula I (R 1 to R 4 are H or OH- protecting group or a derivative thereof) is reacted with an alkylating agent such as organic compound in an inert solvent such as dioxane, a prepared reaction product is purified by a means such as column chromatography to give a new compound shown by formula II (R is substituted or nonsubstituted unsaturated cholesterol side chain group or cholesterol side chain group substituted with unsaturated group). Then this compound is subjected to reductive elimination reaction through 7,8-dihydroxy cyclic ortho-ester or a homologue thereof or elimination reaction of 7,8-dihydroxy component with a metal such as reduction type titanium to give a compound shown by formula III. n COPYRIGHT: (C)1992,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9711053-A1 |
| priorityDate | 1990-08-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.