http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109467584-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J1-0025 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J1-00 |
| filingDate | 2018-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-05-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109467584-B |
| titleOfInvention | Synthesis method of androstane-4-alkene-3-ketone-17 beta-methyl carboxylate |
| abstract | The invention discloses a synthetic method of androstane-4-alkene-3-ketone-17 beta-methyl carboxylate, which comprises the following steps: (a) taking sterol fermentation product androst-4-ene-3, 17-dione as an initial raw material, and etherifying and protecting a 3-keto group to obtain a compound shown in a formula 2; (b) carrying out Witt reaction and hydrolysis rearrangement on 17-bit ketone of the compound shown in the formula 2 to obtain a compound shown in a formula 3; (c) esterifying the compound shown in the formula 3, and collecting the androstane-4-alkene-3-ketone-17 beta-carboxylic acid methyl ester shown in the formula 1 from the reaction product. The method has the advantages of stable raw material source, less pollution, environmental protection and low price, and is a synthetic method with low cost, simple and direct process and more environmental protection. The reaction formula is as follows: |
| priorityDate | 2018-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 90.