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Bioorganic & medicinal chemistry

C6-(N,N-butyl-methyl-heptanamide) derivatives of estrone and estradiol as inhibitors of type 1 17beta-hydroxysteroid dehydrogenase: Chemical synthesis and biological evaluation.


PMID 17110114

Abstract

A series of estrone and estradiol derivatives having an N-butyl,methyl heptanamide side chain at C6-position were synthesized, tested as inhibitors of type 1 17beta-HSD and assessed for their possible estrogenic activity. A better type 1 17beta-HSD inhibition was obtained for the 6beta-side chain orientation over 6alpha; the C17-alcohols are more potent inhibitors than the corresponding ketones; introducing a 2-methoxy group decreased the inhibitory potency; and the replacement of a C-S bond by a C-C bond in the C6beta-side chain is not detrimental to inhibition. Interestingly, the new inhibitors were also found less estrogenic than the lead compound in two breast cancer cell lines, T-47D and MCF-7.

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K1001
β-Estradiol-6-one
C18H22O3