Structure-activity relationships of rosiglitazone for peroxisome proliferator-activated receptor gamma transrepression
摘要:
Anti-inflammatory effects of peroxisome proliferator-activated receptor gamma (PPRA gamma) ligands are thought to be largely due to PPAR gamma-mediated transrepression. Thus, transrepression-selective PPAR gamma ligands without agonistic activity or with only partial agonistic activity should exhibit anti-inflammatory properties with reduced side effects. Here, we investigated the structure-activity relationships (SARs) of PPAR gamma agonist rosiglitazone, focusing on transrepression activity. Alkenic analogs showed slightly more potent transrepression with reduced efficacy of transactivating agonistic activity. Removal of the alkyl group on the nitrogen atom improved selectivity for transrepression over transactivation. Among the synthesized compounds, 3l exhibited stronger transrepressional activity (IC50: 14 mu M) and weaker agonistic efficacy (11%) than rosiglitazone or pioglitazone. (C) 2017 Elsevier Ltd. All rights reserved.
One-pot synthesis of 2-aminobenzothiazoles using a new reagent of [bmim]br<sub>3</sub>in [bmim]BF<sub>4</sub>
作者:Zhang-Gao Le、Jian-Ping Xu、Huo-Yu Rao、Min Ying
DOI:10.1002/jhet.5570430447
日期:2006.7
The one-pot direct synthesis of 2-aminobenzothiazoles from phenyl isothiocyanate and amines using a newreagent of 1-butyl-3-methylimidazolium tribromide ([Bmim]Br3) in ionic liquid 1-butyl-3-methylimidazolium tetraflouoroborate ([Bmim]BF4) is described.
The present invention provides a polymerizable compound having high storage stability without causing crystal precipitation when added to a polymerizable composition. The present invention also provides a polymerizable composition containing the compound. When the filmy polymer produced through polymerization of the polymerizable composition is irradiated with UV light, it hardly discolors or peels from substrate. Further, the present invention provides a polymer produced through polymerization of the polymerizable composition and an optically anisotropic body using the polymer.
Cyclizations of Thioureas with a Hydroxy Group at the β-Position of the<i>N</i>-Substituent. II. Oxidation with Thionyl Chloride to Benzothiazoles
作者:Yoshio Iwakura、Keisuke Kurita
DOI:10.1246/bcsj.43.2535
日期:1970.8
The reaction of N′-alkyl and N-phenyl substituted thioureas with a hydroxyl group at the β-position of the N-substituent with thionylchloride gave benzothiazole derivatives by an oxidative cyclization reaction; no other products, such as thiazolines or oxazolines, were formed. The structure was confirmed by the various spectral and chemical data.
Synthesis and In Vitro Antitumor Activity of Novel Fluorine Containing Pyrazoles and Pyrazolines
作者:Ashish Sharma、Tabreskhan Pathan、Rhea Mohan、C. S. Ramaa
DOI:10.2174/157018011797200812
日期:2011.11.1
Novel fluorine-containing pyrazolines (2a-2g) and pyrazoles (5a-5e) were synthesized and evaluated for their cytotoxicity in vitro in a panel of four human cancer cell lines using Sulforhodamine B (SRB) assay. Though the compounds showed varying degrees of cytotoxicity in different cell lines, it was noteworthy that the 4H pyrazoles (5a-5e) were distinguished by their potent and selective action against MCF7 breast cancer cell line.
A Green Approach to 2-Substituted Benzo- and Naphthothiazoles via N-bromosuccinimide/Bromide-Mediated C(aryl)-S Bond Formation
作者:Ainka T. Brown、Nadale K. Downer-Riley
DOI:10.3390/molecules27227876
日期:——
coupling of isothiocyanates with amines under mild conditions using N-bromosuccinimide/tetrabutylammonium bromide in 1,2-dimethoxyethane (DME) under ambient conditions. The reactions produce moderate to excellent yields with good functional group tolerance and avoid the use of harsh thermal conditions, corrosive reagents, halogenated solvents, toxic metal salts, and expensive metal catalysts, and are amenable