| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_da54f7ebbd2d9d8a82f92aca4d1b4e48 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J51-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J1-007
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J1-0022
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J1-0011
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07J1-0059 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J1-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07J51-00 |
| filingDate |
2003-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cff06b00fde4450e1b8cfa36a4c58cd4
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8b403d3dddb53c89d884fe7b8507b74c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_855d13f089c0aaa16a964324017465cf
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_829bb3b11897a17fea008e28efa84321
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f992b18109eeaadb6fcec0f969a2998c |
| publicationDate |
2004-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
TW-200400825-A |
| titleOfInvention |
Process for the production of 7 α-methyl steroids |
| abstract |
This invention relates to a process for the production of 7 α-methyl steroids of general formula I, starting from compounds of general formula II, which are reacted in an aprotic solvent in the presence of 1-30 mol% of a copper compound CuYnLm with 1-3 molar equivalents of CH3MgX, then with a strong acid. The process according to the invention is distinguished in that 7 α-methyl steroids are obtained in good yields as well as high chemical purity and high diastereomer purities. The process is distinguished in that less waste accumulates with considerably higher throughput. The process according to the invention can therefore be suitable for the production of 7 α-methyl steroids on the industrial scale. |
| priorityDate |
2002-03-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |