INDUSTRIAL METHOD FOR THE PREPARATION OF HIGH-PURITY OSTETROL
CY1125857T1Undetermined Publication Date: 2026-04-17RICHTER GEDEON NYRT
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Patent Information
- Application Number
- CY20231100091T
- Authority / Receiving Office
- CY · CY
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-09-03
- Filing Date
- 2023-02-21
- Publication Date
- 2026-04-17
- Estimated Expiration
- 2043-02-21
Abstract
The invention relates to the preparation of estetrol of formula (I), derivatives thereof protected at positions 3,15α, 16α, 17β of general formula (III), and 3-hydroxy derivatives thereof protected at positions 15α,16α,17β of general formula (IV), and to the intermediates of general formulas (III) and (IV) applicable to the process. Another aspect of the invention is the use of estetrol of formula (I) obtained by the process of the invention for the preparation of a pharmaceutical composition.
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