Industrial method for the synthesis of 17-acetoxy-11β[4-(dimethylamino)-phenyl]-21-methoxy-19-norpregna-4,9-dien-3,20-dione and the key intermediates of the process
US8183402B2 · kind B2 · utility
1Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2008 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Jul 31, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for the synthesis of the 17-acetoxy-11β-[4-(dimethylamino)-phenyl]-21-methoxy-19-norpregna-4,9-dien-3,20-dione of formula (I):from 3,3-[1,2-etandiyl-bis(oxy)]-oestr-5(10),9(11)-dien-17-one of formula (II):
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.