Synthesis and Biological Evaluation of Cyclopentaquinoline Derivatives as Nonsteroidal Glucocorticoid Receptor Antagonists
摘要:
The steroidal glucocorticoid antagonist mifepristone has been reported to improve the symptoms of depression. We report the discovery of 6-(3,5-dimethylisoxazol-4-yl)-2,2,4,4-tetramethyl-2,3,4,7,8,9-hexahydro-1H-cyclopenta[h]quinolin-3-one 3d (QCA-1093) as a novel nonsteroidal glucocorticoid receptor antagonist. The compound displayed potent in vitro activity, high selectivity Over other steroid hormone receptors, and significant antidepressant-like activity in vivo.
Efficient microwave-assisted synthesis of quinolines and dihydroquinolines under solvent-free conditions
摘要:
A convenient and efficient procedure for the synthesis of quinolines and dihydroquinolines has been developed by a simple one-pot reaction of anilines with alkyl vinyl ketones on the surface of silica gel impregnated with indium(III) chloride under microwave irradiation without any solvent. (C) 2003 Elsevier Science Ltd. All tights reserved.
An efficient process has been developed for the synthesis of 2,2,4-trisubstituted-1,2-dihydroquinolines in good yields through a simple one-pot condensation between anilines and ketones in the presence of zinctriflate as a catalyst at room temperature undersolvent-freeconditions.
Scope and Mechanistic Study of the Ruthenium-Catalyzed<i> ortho</i>-C−H Bond Activation and Cyclization Reactions of Arylamines with Terminal Alkynes
作者:Chae S. Yi、Sang Young Yun
DOI:10.1021/ja055608s
日期:2005.12.1
was found to be a highly effective catalyst for the C-H bond activation reaction of arylamines and terminalalkynes. The regioselective catalytic synthesis of substituted quinoline and quinoxaline derivatives was achieved from the ortho-C-H bond activation reaction of arylamines and terminalalkynes by using the catalyst Ru(3)(CO)(12)/HBF(4).OEt(2). The normal isotope effect (k(CH)/k(CD) = 2.5) was
method using diaryl ditelluride. Further, monotellurides were converted into corresponding tellurium cations. Next, these Lewis acidic tellurium cations were used as catalysts to synthesize 1,2-dihydroquinolines from anilines and highly regioselective creation of β-aminoalcohols from epoxides.
Discovery of Novel Potent Reversible and Irreversible Myeloperoxidase Inhibitors Using Virtual Screening Procedure
作者:Jalal Soubhye、Ibaa Chikh Alard、Iyas Aldib、Martine Prévost、Michel Gelbcke、Annelise De Carvalho、Paul G. Furtmüller、Christian Obinger、Jörg Flemmig、Sara Tadrent、Franck Meyer、Alexandre Rousseau、Jean Nève、Véronique Mathieu、Karim Zouaoui Boudjeltia、François Dufrasne、Pierre Van Antwerpen
DOI:10.1021/acs.jmedchem.7b00285
日期:2017.8.10
The heme enzyme myeloperoxidase (MPO) participates in innate immune defense mechanism through formation of microbicidal reactive oxidants. However, evidence has emerged that MPO-derived oxidants contribute to propagation of inflammatory diseases. Because of the deleterious effects of circulating MPO, there is a great interest in the development of new efficient and specific inhibitors. Here, we have performed a novel virtual screening procedure, depending on ligand-based pharmacophore modeling followed by structure-based virtual screening. Starting from a set of 727842 compounds, 28 molecules were selected by this virtual method and tested on MPO in vitro. Twelve out of 28 compounds were found to have an IC50 less than 5 mu M. The best inhibitors were 2-(7-methoxy-4-methylquinazolin-2-yl)guanidine (28) and (R)-2-(14(2,3-dihydro-1H-imidazol-2-yl-methyl)pyrrolidin-3-yl)-5-fluoro-1H-benzo[d]imidazole (42) with IC50 values of 44 and 50 nM, respectively. Studies on the mechanism of inhibition suggest that 28 is the first potent mechanism-based inhibitor and inhibits irreversibly MPO at nanomolar concentration.