Industrial process for the synthesis of ulipristal acetate and its 4′-acetyl analogue
US9676814B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Oct 1, 2014 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Oct 1, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07B2200/07
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a new process for the synthesis of compounds of formula (I) (wherein the meaning of R is dimethylamino or acetyl group) using the compound of formula (II) (wherein the meaning of R is dimethylamino or 2-methyl-1,3-dioxolan-2-yl group) as starting material, as well as to the intermediate of the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.