HL005—A new selective PPARγ antagonist specifically inhibits the proliferation of MCF-7
摘要:
Peroxisome proliferator-activated receptor-gamma (PPAR gamma) is a nuclear transcription factor which is involved in many diseases, such as diabetes, inflammation, dyslipidemia. hypertension, and cancer. Recently, there are many reports showing that PPAR gamma agonists have preclinical and clinical anticancer activity, with relatively few reports on anticancer effects of PPAR gamma antagonists. From our compound library, a novel 3-thiazolinone-modified benzoic acid derivative HL005 is found as PPAR gamma selective ligand through SPR analysis (K-D = 0.21 mu M), yeast two-hybrid results suggest that HL005 antagonize the potent PPAR gamma agonist rosiglitazone-induced recruitment of the coactivator for PPAR gamma (IC50 = 7.97 mu M). Different from the most reported PPAR gamma antagonist, HL005 can inhibit the proliferation of MCF-7 cell line in a concentration-dependent manner and induce cell cycle arrest at G2/M phase, other than interference with cell adhesion. In order to study the binding mode of this compound, three derivatives are synthesized to get more detail about the structure-activity relationship, molecular docking and the NMR spectra indicate that similar to most PPAR gamma ligand, the carboxylic acid group is an important moiety for HL005 and contributes strong interaction with PPAR gamma. (C) 2011 Elsevier Ltd. All rights reserved.
Nickel Catalysis Enables Access to Thiazolidines from Thioureas via Oxidative Double Isocyanide Insertion Reactions
作者:Wen-Kui Yuan、Yan Fang Liu、Zhenggang Lan、Li-Rong Wen、Ming Li
DOI:10.1021/acs.orglett.8b03098
日期:2018.11.16
Ni-catalyzed oxidative double isocyanide insertion to thioureas under air conditions, in which thioureas play three roles as a substrate, a ligand, and overcoming isocyanide polymerization. The reaction is featured by employing a low-cost and low loading Ni(acac)2 catalyst, without any additives, and high atom economy. This is the first example to directly apply a Ni(II) catalyst in oxidative double isocyanide
Quantitative Solid-State Reactions of Amines with Carbonyl Compounds and Isothiocyanates
作者:Gerd Kaupp、Jens Schmeyers、Juergen Boy
DOI:10.1016/s0040-4020(00)00511-1
日期:2000.9
solid anhydrides to give diamides (therefrom imides) or amidic carboxylic salts or imides, with solid imides to give diamides, with solid lactones or carbonates to give functionalized carbamic esters, with polycarbonates to give degradative aminolysis, and with solid isothiocyanates to give thioureas. Diamides give imides by solid-state thermolysis or acid catalysis. Various double, two-step, 3-cascade
A new method for the synthesis of substituted 5-(2-hydroxyethyl)-2-phenylimino-1,3-thiazolidin-4-ones and 5-(2-hydroxyethyl)-2-phenylamino-4,5-dihydro-1,3-thiazol-4-ones is described, starting from phenylthioureas and 3-bromotetrahydrofuran-2-one. The reaction proceeds under mild conditions, is very simple to perform, and is applicable to a relatively wide range of substituents in benzene nucleus.
A Facile Synthesis of 2-N(Methyl Amino) Benzothiazoles
作者:Narahari Babu Ambati、V. Anand、P. Hanumanthu
DOI:10.1080/00397919708006084
日期:1997.5
Abstract Reaction of aromaticprimaryamines with methylisothiocyanate (MITC) yielded N-methyl-N1-(benzelene-1-yl)thioureas which underwent oxidative cyclization in the presence of bromine in aceticacid, at room temperature, affording the title compounds.
Thiazoline derivatives of the general formula I ##STR1## wherein R.sup.1 to R.sup.7 have the specified meanings, physiologically acceptable acid addition salts thereof, processes for their preparation, pharmaceutical preparations based on these compounds and their use for acting on the serum lipoprotein spectrum. The invention moreover relates to compounds of the formulae ##STR2## wherein A, R, R.sup.1 to R.sup.7, Y and Z have the specified meanings.