Design and synthesis of novel 3,4-disubstituted pyrazoles for nanomedicine applications against malignant gliomas
摘要:
A series of novel 3,4-disubstituted pyrazoles were synthesized. The cytotoxicity against U87MG glioma cell line have been investigated in vitro and three of these compounds showed promising inhibitory activity on cell growth with an IC(50) lower than 90 mu M. AutoDock molecular docking into type I TGF-beta receptor (TGF-beta-RI; PDB: 1py5) has been done for lead optimization of the mentioned compounds as potential TGF-beta-RI1 inhibitors. In particular, 3-aryl-4-amido pyrazole containing long omega-amino-aliphatic chain emerged as a good candidate for further optimization. Entrapment into targetable PEG-based micelles improved growth inhibition IC(50) values up to 100 nM and this could lead to a novel drug delivery strategy for treating glioblastoma. (C) 2010 Elsevier Masson SAS. All rights reserved.
Modulators of Cystic Fibrosis Transmembrane Conductance Regulator
申请人:VERTEX PHARMACEUTICALS INCORPORATED
公开号:US20160095858A1
公开(公告)日:2016-04-07
The present invention features a compound of formula I:
or a pharmaceutically acceptable salt thereof, where R
1
, R
2
, R
3
, W, X, Y, Z, n, o, p, and q are defined herein, for the treatment of CFTR mediated diseases, such as cystic fibrosis. The present invention also features pharmaceutical compositions, method of treating, and kits thereof.
Pyrazole‐Based Ligands for the [Copper–TEMPO]‐Mediated Oxidation of Benzyl Alcohol to Benzaldehyde and Structures of the Cu Coordination Compounds
作者:Jorge Salinas Uber、Yorick Vogels、Dave van den Helder、Ilpo Mutikainen、Urho Turpeinen、Wen Tian Fu、Olivier Roubeau、Patrick Gamez、Jan Reedijk
DOI:10.1002/ejic.200700424
日期:2007.9
pyrazole-based ligands have been designed, and the catalytic performances of their copper(II) complexes for the [copper/TEMPO]-mediated oxidation of benzyl alcohol to benzaldehyde have been examined. The pyridine-pyrazole ligands give efficient catalysts, while the use of naphthol-pyrazole ligands results in inactive catalytic systems. Single-crystals of four Cu coordinationcompounds obtained from
A Heterogeneous Ruthenium dmso Complex Supported onto Silica Particles as a Recyclable Catalyst for the Efficient Hydration of Nitriles in Aqueous Medium
complex onto two types of supports: mesoporous silicaparticles (SP) and silica coated magnetic particles (MSNP). First, we have prepared and characterized the molecular complexes containing the bidentate pyridylpyrazole ligands pypz-Me and pypz-CH2COOEt, with the formula [RuIICl2(pypz-R)(dmso)2] (R = Me, 1; CH2COOEt, 2). Complex 2 was anchored onto the silica supports, yielding the heterogeneous systems
spectroscopically characterized in solution through 1HNMR and UV−vis techniques, and the chloro complexes have also been characterized in the solid state through monocrystal X-ray diffraction analysis. The pyrpy ligand undergoes an oxidation at the 3-position of the pyrrolate ring during the formation of the corresponding aqua complex thus generating the analogouscompound containing the oxidized ligand pyrpy-O
合成含有通式[Ru II(T)(D)(X)] n +(T = 2,2':6',2''-叔吡啶(trpy ); D = 3,5-二甲基-2-(2-吡啶基)吡咯酸酯(pyrpy)和2-(1-甲基-3-吡唑基)吡啶(pypz-Me); X = Cl,H 2 O)具有被描述。所有配合物均已在溶液中通过1进行了光谱表征还通过单晶X射线衍射分析对H NMR和UV-vis技术以及氯配合物进行了固态表征。相应的水配合物形成过程中,该吡啶基配体在吡咯酸盐环的3位上进行氧化,从而产生含有氧化的配体pyrpy-O的类似化合物。还通过CV和DPV技术研究了所有配合物的氧化还原特性,可以揭示和合理化几何(反式与顺式)和电子(中性与阴离子)效应。最后,就不同烯烃与PhI(OAc)2的环氧化作用,测试了整套Ru-OH 2配合物的反应性。在所有情况下,均获得了良好的选择性和转化率。此外,当使用这些催化剂环氧化顺-β-甲基苯乙烯时,可以完全保留初始的顺式构型。
A Recoverable Ruthenium Aqua Complex Supported on Silica Particles: An Efficient Epoxidation Catalyst
and characterization of complexes with a phosphonated terpyridine (trpy) ligand (trpy‐P‐Et) and a bidentate pyridylpyrazole (pypz‐Me) ligand, with formula [RuII(trpy‐P‐Et)(pypz‐Me)X]n+ (2: X=Cl, n=1; 3: X=H2O, n=2), is described, together with the anchoring of 3 on two types of supports: mesoporous silica particles (SP) and silica‐coated magnetic particles (MSP). Aquacomplex 3 is easily obtained by