Process for the preparation 2-substituted-derivatives of estrone and estradiol
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United States of America Patent
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Mar 22, 2011
Grant Date -
Jan 8, 2009
app pub date -
Aug 1, 2005
filing date -
Aug 4, 2004
priority date (Note) -
Expired
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Abstract
The invention provides a process for the preparation of 2-substituted-derivatives of estrone and estradiol. The invention also provides several novel compounds, which can be intermediates in the process, and processes to prepare these novel compounds. The invention also provides 2-alkoxy-estrone, 2-alkoxy-estradiol or mixtures thereof essentially free from other estrogenic intermediates.
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