http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S57109800-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d5d04736b0b882a4f5a1e0e0e4cd8cbb |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J9-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J75-00 |
| filingDate | 1980-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_455bb77e45f359c7babf61f3be8a90a4 |
| publicationDate | 1982-07-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S57109800-A |
| titleOfInvention | Preparation of alkylsulfonic acid of steroid compound |
| abstract | PURPOSE: To obtain the titled ester rapidly without using a large amount of an expensive pyridine, by reacting a steroid compound having a hydroxyl group with an alkylsulfonyl halide in the presence of a pyridine and a tertiary amine. n CONSTITUTION: (A) A steroid compound having a hydroxyl group, e.g. methyl 2,7-diacetyloxy-12-hydroxy-5β-cholanate, is reacted with (B) an alkylsulfonyl halide, e.g. methanesulfonyl chloride, in the presence of a pyridine and a tertiary amine, e.g. triethylamine, as a dehydrohalogenating agent, to give the aimed ester compound. The molar ratios of the respective components are preferably as follows; 1.1W3mol component (B) based on one mole OH group in the component (A) and 1W3mol pyridine and tertiary amine basd on one mole OH group in the component (A). n COPYRIGHT: (C)1982,JPO&Japio |
| priorityDate | 1980-12-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 24.