PROCESS FOR THE PREPARATION 2-SUBSTITUTED DERIVATIVES OF ESTRONE AND ESTRADIOL
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Feb 22, 2011
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Aug 4, 2004
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in one or more steps to a compound of general formula IIwherein R1 and R2 have the above defined meanings.Furthermore the invention provides several novel compounds, which can be intermediates in the above 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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