Novel 17-hetero substituted steroids
US4921846A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Sep 16, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J71/001
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Steroids with a 17-spiro substituent of 3,4 or 6 ring members of the formula ##STR1## wherein R.sub.1 is selected from the group consisting of carbocyclic aryl, heterocyclic aryl and aralkyl, R.sub.2 is a hydrocarbon of 1 to 18 carbon atoms in the .alpha.-or .beta.-position, the wavy line of the spiro ether indicates the oxygen is .alpha.-or .beta.-, X is selected from the group consisting of --CH.dbd.CH--CH.sub.2 --CH.sub.2 -- and --(CH.sub.2).sub.n --, n is 1, 2 or 4, the A and B rings have a structure selected from the group consisting of ##STR2## R' and R" are individually hydrogen or alkyl of 1 to 4 carbon atoms, R.sub.e is selected from the group consisting of hydrogen, alkyl of 1 to 6 carbon atoms, substituted alkyl of 1 to 6 carbon atoms and acyl and their non-toxic, pharmaceutically acceptable acid addition salts having a remarkable antiprogestomimetic activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.