Characterization of thyroid hormone receptor α (TRα)-specific analogs with varying inner- and outer-ring substituents
作者:Cory A. Ocasio、Thomas S. Scanlan
DOI:10.1016/j.bmc.2007.10.040
日期:2008.1
Analogs of the TR alpha-specific thyromimetic CO23 were synthesized and analyzed in vitro using competitive binding and transactivation assays. Like CO23, all analogs bind to both thyroid hormone receptor subtypes with about the same affinity; however, modification of CO23 by derivatization of the 3' position of the outer-ring or replacement of the inner-ring iodides with bromides attenuates binding. Despite lacking a preference in binding to TR alpha, all analogs display TR alpha-specificity in transactivation assays using U2OS and HeLa cells. At best, several agonists exhibit an approximately 6-12-fold preference in transactivation when tested with TR alpha in HeLa cells. One analog, CO24, showed in vivo TR alpha-specific action in a tadpole metamorphosis assay. (c) 2007 Elsevier Ltd. All rights reserved.
Investigating 3,3-diaryloxetanes as potential bioisosteres through matched molecular pair analysis
作者:Maryne A. J. Dubois、Rosemary A. Croft、Yujie Ding、Chulho Choi、Dafydd R. Owen、James A. Bull、James J. Mousseau
DOI:10.1039/d1md00248a
日期:——
Oxetanes have received increasing interest in medicinal chemistry as attractive polar and low molecular weight motifs. The application of oxetanes as replacements for methylene, methyl, gem-dimethyl and carbonyl groups has been demonstrated to often improve chemical properties of target molecules for drug discovery purposes. The investigation of the properties of 3,3-diaryloxetanes, particularly of
achieved by proper aromatic core fluorination; in addition, the first cubic phases having π-conjugated oligo(phenylene ethynylene) rods on the gyroidminimalsurface were obtained. These new structures composed of 3D folded layers of parallel arranged π-conjugatedrods should allow charge transport in all three dimensions, which is of interest for organic semiconductor applications