http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S56147765-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1374dd16777534b65ad4422333245af8 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-55 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C401-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 |
| filingDate | 1980-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c25440c1c5dd4b2cc880a922187f5f52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aef09cd6facbd064b64927cfd1025971 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6576e2785f80ae0855620bb32a298632 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e4d21366bb786f5d87e4d17295c2a5dd |
| publicationDate | 1981-11-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S56147765-A |
| titleOfInvention | Preparation of active vitamin d3 |
| abstract | PURPOSE: To obtain the titled compound useful as a calcium metabolic adjustor, by isomerizing a hydroxycholesta-5,7-diene protected by a lower alkoxy group thermally under irradiation of ultraviolet light. n CONSTITUTION: A hydroxycholesta-5,7-diene of formula I (R 1 and R 2 are lower alkoxycarbonyl R 3 and R 4 are H or lower alkoxycarbonyloxy) is isomerized thermally under irradiation of ultraviolet light to give a mixture of an active vitamin D 3 derivative of formula II in which the hydroxyl groups are protected with the unreacted hydroxycholesta-5, 7-diene of formula I. The unreacted compound of formula I and the compound of formula II are then separated from the resultant mixture, and the unreacted compound of formula I is circulated for reuse. The protecting groups in the compound of formula II are then removed to afford the titled compound of formula III (R 3 ' and R 4 ' are H or OH). n COPYRIGHT: (C)1981,JPO&Japio |
| priorityDate | 1980-04-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 33.