Industrial process for the synthesis of nomegestrol-acetate
US11274119B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Dec 15, 2017 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Nov 29, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J7/0045
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the last step of a synthetic process, in which Nomegestrol-acetate of formula (I) is synthesized from 17α-acetoxy-6-methylene-19-norpregn-4-ene-3,20-dione of formula (II) in the presence of Pd/C catalyst and acetic acid in hot ethanolic solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.