SYNTHESIS OF ESTETROL VIA ESTRONE DERIVED STEROIDS
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United States of America Patent
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Sep 20, 2018
app pub date -
May 17, 2018
filing date -
May 17, 2018
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Abstract
A process is provided for the making of estetrol starting from a 3-A-oxy-estra-1,3,5(10),15-tetraen-17-one, wherein A is an C1-C5 alkyl group, preferably a methyl group, or a C7-C12 benzylic group, preferably a benzyl group. This process is particularly suitable to industry.
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