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filingDate 2022-03-29-04:00^^<http://www.w3.org/2001/XMLSchema#date>
inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_07bee1724c3f6fa266bf9e94953d9ddd
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publicationDate 2022-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber CO-2022003769-A2
titleOfInvention Industrial process for the preparation of high purity estetrol
abstract The invention relates to the preparation of estetrol of formula (I), derivatives thereof protected in the 3,15α,16α,17β positions of general formula (III), and 3-hydroxy derivatives thereof protected in the 15α,16α positions ,17β of general formula (IV), and to the intermediate products of general formulas (III) and (IV) applied in 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.
priorityDate 2019-09-03-04:00^^<http://www.w3.org/2001/XMLSchema#date>
type http://data.epo.org/linked-data/def/patent/Publication

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