Synthesis of 17α-substituted ethynylestradiols: Potential ligands for drug vectors
2010
Abstract 17α-substituted ethynylestradiols, derived from estrone, were converted to their corresponding 17α-(bromo- or iodo-propargyl)estrone intermediates. Nucleophilic substitution onto these moieties with malonate diester followed by hydrolysis and complexation with cis -Pt(Me 2 en)I 2 (Me 2 en = N , N -dimethylethylenediamine) gave cis -Pt(Me 2 en)(2-(3-(17β-estradiol-17α-yl)-prop-2-ynyl)malonato) 7 , thus demonstrating that these estrogen-derived compounds can be used to synthesize stable Pt(II) complexes. The 3-(17β-estradiol-17α - yl)-prop-2-ynyl-1-sulfanylethylthiol 23 was also prepared.
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