Indazole Estrogens: Highly Selective Ligands for the Estrogen Receptor β
摘要:
The estrogen receptors, ERalpha and ERbeta, are important pharmaceutical targets. To develop ERbeta-selective ligands, we synthesized a series of nonsteroidal compounds having a phenyl-2H-indazole core with different groups at C-3. Several of these show high affinity and good ERbeta selectivity, especially those with polar and/or polarizable substituents at this site (halogen, CF3, nitrile); the best compounds have affinities for ERbeta comparable to estradiol, with ERbeta affinity selectivity > 100. This potency and ERbeta selectivity is also seen in cell-based transcriptional assays, where several compounds showed ERbeta efficacies equivalent to that of estradiol with ERbeta potency selectivities of 100. These compounds might prove useful as selective pharmacological probes to study the biological actions of estrogens mediated through ERP, and they might lead to the development of useful pharmaceuticals. These findings also contribute to an evolving pharmacophore that characterizes certain nonsteroidal ligands having high ERbeta subtype affinity and potency selectivity.
Identification and initial optimization of inhibitors of Clostridium difficile (C. difficile) toxin B (TcdB)
作者:Jeffrey J. Letourneau、Ilana L. Stroke、David W. Hilbert、Laurie J. Sturzenbecker、Brett A. Marinelli、Jorge G. Quintero、Joan Sabalski、Linh Ma、David J. Diller、Philip D. Stein、Maria L. Webb
DOI:10.1016/j.bmcl.2018.01.005
日期:2018.2
The discovery, synthesis and preliminary structure-activityrelationship (SAR) of a novel class of inhibitors of Clostridium difficile (C. difficile) toxin B (TcdB) is described. A high throughput screening (HTS) campaign resulted in the identification of moderately active screening hits 1–5 the most potent of which was compound 1 (IC50 = 0.77 µM). In silico docking of an early analog offered suggestions
A Silicon Linker for Direct Loading of Aromatic Compounds to Supports. Traceless Synthesis of Pyridine-Based Tricyclics
作者:Frank X. Woolard、Jonathan Paetsch、Jonathan A. Ellman
DOI:10.1021/jo9710745
日期:1997.9.1
[EN] BENZODIAZEPINE GCNF MODULATORS FOR STEM CELL MODULATION<br/>[FR] MODULATEURS DU GCNF A LA BENZODIAZEPINE DESTINES A MODULER LES CELLULES SOUCHES
申请人:PHARMACOPEIA INC
公开号:WO2007095495A2
公开(公告)日:2007-08-23
[EN] A genus of benzodiazepines that modulate Germ Cell Nuclear Factor (GCNF) is disclosed. The compounds are useful to regulate stem cell differentiation and as contraceptives. Other embodiments are also disclosed. [FR] La présente invention concerne un genre de benzodiazépines qui module le facteur nucléaire de cellules germinales (GCNF). Les composés servent à réguler la différentiation des cellules souches et servent également de contraceptif. L'invention a également trait à d'autres modes de réalisation.