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Synthesis and biological evaluation of a novel series of furans: ligands selective for estrogen receptor alpha.

Abstract：

:A variety of nonsteroidal systems can function as ligands for the estrogen receptor (ER), in some cases showing selectivity for one of the two ER subtypes, ER alpha or ER beta. We have prepared a series of heterocycle-based (furans, thiophenes, and pyrroles) ligands for the estrogen receptor and assessed their behavior as ER ligands. An aldehyde enone conjugate addition approach and an enolate alkylation approach were developed to prepare the 1,4-dione systems that were precursors to the trisubstituted and tetrasubstituted systems, respectively. All of the diones were easily converted into the corresponding furans, but formation of the thiophenes and pyrroles from the more highly substituted 1,4-diones was problematical. Of the systems investigated, the tetrasubstituted furans proved to be most interesting. They were ER alpha binding- and potency-selective agents, with the triphenolic 3-alkyl-2,4,5-tris(4-hydroxyphenyl)furans (15a-d) displaying generally higher subtype binding selectivity than the bisphenolic analogues (15f-i). Binding selectivity for ER alpha was as high as 50-70-fold, and transcriptional activation studies showed that several members of this series were ER alpha selective agonists, with the best compound [3-ethyl-2,4,5-tris(4-hydroxyphenyl)furan, 15b] having full transcriptional activity on ER alpha while being inactive on ER beta. Comparative binding affinity analysis and molecular modeling were used to investigate the preferred binding mode adopted by the furan ligands, which appears to have the C(2) phenol mimicking the important role of the A-ring of estradiol. These ligands should be useful in studying the biological roles of both ER alpha and ER beta, and they might form the basis for the development of novel estrogen pharmaceuticals.

journal_name

J Med Chem

journal_title

Journal of medicinal chemistry

authors

Mortensen DS,Rodriguez AL,Carlson KE,Sun J,Katzenellenbogen BS,Katzenellenbogen JA

doi

10.1021/jm010211u

keywords:

subject

Has Abstract

pub_date

2001-11-08 00:00:00

pages

3838-48

issue

23

eissn

0022-2623

issn

1520-4804

pii

jm010211u

journal_volume

44

pub_type

杂志文章

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