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- W2094767504 abstract "Compounds that selectively modulate thyroid hormone action by functioning as isoform-selective agonists or antagonists of the thyroid hormone receptors (TRs) might be useful for medical therapy. We have synthesized a high affinity TRbeta-selective agonist ligand, GC-1, and optimized the synthetic route to provide large quantities of the compound for animal testing. In addition to an improvement in efficiency, the new synthetic route offers a chemical handle for selective modification of the thyronine skeleton to produce new derivatives. To explore the effect of GC-1 core structure modifications on binding to TR isoforms and activation of transcription, we developed here an efficient and flexible route to a new series of 5'-substituted GC-1 analogues. This route relies on ortho lithiation and in situ boration of the biarylmethane compound 1, a key intermediate of the revised GC-1 synthesis, followed by Suzuki cross-coupling. Using this approach we prepared and tested eleven 5'-substituted GC-1 analogues. Substitution at the 5'-position decreased binding affinity, but retained TRbeta-selectivity for most of the compounds. Transactivation assays reveal that most of these compounds function as thyroid hormone agonists, but one compound (GC-14) antagonizes the response to thyroid hormone." @default.
- W2094767504 created "2016-06-24" @default.
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- W2094767504 date "2002-02-01" @default.
- W2094767504 modified "2023-10-04" @default.
- W2094767504 title "Synthesis and biological activity of novel thyroid hormone analogues: 5′-aryl substituted GC-1 derivatives" @default.
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- W2094767504 doi "https://doi.org/10.1016/s0968-0896(01)00284-x" @default.
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