Development of Potent and Selective Inhibitors of <i>ecto</i>-5′-Nucleotidase Based on an Anthraquinone Scaffold
作者:Younis Baqi、Sang-Yong Lee、Jamshed Iqbal、Peter Ripphausen、Anne Lehr、Anja B. Scheiff、Herbert Zimmermann、Jürgen Bajorath、Christa E. Müller
DOI:10.1021/jm901851t
日期:2010.3.11
ecto-5'-Nucleotidase (eN, CD73) plays it major role in controlling extracellular adenosine levels. eN inhibitors have potential its novel drugs, for example, for the treatment of cancer. In the present study, we synthesized and investigated a series of 55 anthraquinone derivatives as potential inhibitors of eN, I I of which are novel compounds and another I I of which had previously been described but have now been synthesized by all improved method. We identified several potent inhibitors of rat eN. The most potent compounds were 1-amino-4-[4-fluoro-2-carboxyphenylamino]-9, 10-dioxo-9, 10-dihydroanthracene-2-sulfonate (45, PSB-0952, K-i = 260 nM) and 1-amino-4-[2-anthracenylamino]-9, 10-dioxo-9, 10-dihydroanthracene-2-sulfonate (52, PSB-0963, 150 nM), with 52 being the most potent eN inhibitor described to date. Selected compounds were further characterized and found to exhibit a competitive mechanism of inhibition. Investigations of ecto-nucleoside triphosphate diphosphohydrolases (NTPDases) and the P2Y receptor subtypes P2Y(2), P2Y(4), P2Y(6), and P2Y(12) showed that compound 45 exhibited the highest degree of selectivity (> 150-fold).
Efficient and mild deamination procedure for 1-aminoanthraquinones yielding a diverse library of novel derivatives with potential biological activity
作者:Younis Baqi、Christa E. Müller
DOI:10.1016/j.tetlet.2012.09.011
日期:2012.12
A convenient in situ method is described for reductive removal of the amino group in position 1 of the anthraquinone (AQ) moiety. The reaction proceeds smoothly within a few minutes yielding novel AQ derivatives in excellent yields. Diazonium salt formation is followed by reduction with zinc in ethanol. The method has been applied to a variety of 1-amino-AQ derivatives. It allows access to a large library of new AQ derivatives which possess potential as pharmacological tools for studying purinergic signaling, and as potential drugs, for example, for the treatment of cancer and cardiovascular diseases. (C) 2012 Elsevier Ltd. All rights reserved.
Development of Potent and Selective Antagonists for the UTP-Activated P2Y<sub>4</sub> Receptor
作者:Muhammad Rafehi、Enas M. Malik、Alexander Neumann、Aliaa Abdelrahman、Theodor Hanck、Vigneshwaran Namasivayam、Christa E. Müller、Younis Baqi
DOI:10.1021/acs.jmedchem.7b00030
日期:2017.4.13
nM, selectivity versus other P2Y receptor subtypes, and is thought to act as an allosteric antagonist. A receptor homology model was built and docking studies were performed to analyze ligand–receptor interactions. Compound 64 (PSB-1699, sodium 1-amino-4-[4-(3-pyridin-3-ylmethylthio)phenylamino]-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate) represents the most selective P2Y4 receptor antagonist known