Intermediates for the preparation of 11-methylene steroids
US12227537B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | May 13, 2021 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Nov 15, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Compounds having the formula or solvates of the compounds can be used as intermediates in the preparation of the synthetic steroids, Etonogestrel and Desogestrel, as well as other pharmaceutically active agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.