http://rdf.ncbi.nlm.nih.gov/pubchem/patent/FR-2158823-A5
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_69c91bbf0395db010b4806f50d808c4e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J71-0031 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J5-0053 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J5-0076 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J41-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J71-00 |
| filingDate | 1972-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1973-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1973-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | FR-2158823-A5 |
| titleOfInvention | Steroid 21-alcohols prepn - by acidolysis of 21-nitrates with hf |
| abstract | Steroid 21-alcohols of formula (I): (where R1 and R2 are H or R1+R2 is a double bond; R3 is H or alpha- or beta-OH; R4 is H or alpha-halo; R5 is H or free or esterified alpha-OH; and R6 is H, free or esterified alpha-OH, or alpha- or beta-methyl; or R3+R4 is a double bond; or R5+R6 is isopropylidenedioxy) are prepd. by reacting steroid 21-nitrates of formula (II): (in which R3+R4 can also be an epoxy gp.) with a 3- to 20-fold molar excess of anhydrous HF at 20 degrees C in a halohydrocarbon (pref. CHCl3). Bases and Lewis bases and Lewis bases are not required; the products can readily be isolated after neutralisation of excess HF, and (I; R4 = alpha-fluoro) can be obtd. in a single step from (II; R3+R4 = epoxy). |
| priorityDate | 1971-09-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID6212 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419558313 |
Total number of triples: 17.