Synthesis, Biological Evaluation, and Utility of Fluorescent Ligands Targeting the μ-Opioid Receptor
作者:Luke S. Schembri、Leigh A. Stoddart、Stephen J. Briddon、Barrie Kellam、Meritxell Canals、Bim Graham、Peter J. Scammells
DOI:10.1021/acs.jmedchem.5b01664
日期:2015.12.24
Fluorescently labeled ligands are useful pharmacological research tools for studying receptor localization, trafficking, and signaling processes via fluorescence imaging. They are also employed in fluorescent binding assays. This study is centered on the design, synthesis, and pharmacologicalevaluation of fluorescent probes for the opioidreceptors, for which relatively few non-peptidic fluorescent
additional metal coordinating groups were designed as ligands of metal cations. These compounds were synthesized by a Diels-Alder (DA) strategy, using 1-diethoxyphosphoryl-1,3-butadiene and a series of N-substituted maleimides as dienophiles. Two cycloadducts, bearing a terminal primary alcohol and a terminal iodide, respectively, were used as key intermediates for further functionalizations. Metal coordination
具有半笼结构和带有额外金属配位基团的 N 侧链的膦化分子被设计为金属阳离子的配体。这些化合物是通过 Diels-Alder (DA) 策略合成的,使用 1-diethoxyphosphoryl-1,3-butadiene 和一系列 N-取代的马来酰亚胺作为亲二烯体。分别带有末端伯醇和末端碘化物的两种环加合物用作进一步功能化的关键中间体。ESI-HRMS 研究证明了配备有功能化 N 侧链的配体的金属配位特性。通过发射模式下的光致发光光谱测定了一种具有二膦酸化配体的选定 Eu III 复合物的化学计量
[EN] AMATOXIN DERIVATIVES AND CONJUGATES THEREOF AS INHIBITORS OF RNA POLYMERASE<br/>[FR] DÉRIVÉS D'AMATOXINE ET LEURS CONJUGUÉS COMME INHIBITEURS DE L'ARN POLYMÉRASE
申请人:NOVARTIS AG
公开号:WO2016071856A1
公开(公告)日:2016-05-12
The invention disclosed herein relates to cytotoxic cyclic peptides of Formula (I), methods of inhibiting RNA polymerase with such cyclic peptides, immunoconjugates comprising such cyclic peptides (i.e Antibody Drug Conjugates), pharmaceutical compositions comprising such cyclic peptides immunoconjugates, compositions comprising such cyclic peptides immunoconjugates with a therapeutic co-agent and methods of treatment using such cyclic peptides immunoconjugates: Formula (I).
Synthesis of azobenzenealkylmaleimide probes to photocontrol the enzyme activity of a bacterial histone deacetylase-like amidohydrolase
作者:Benjamin Horstmann、Michael Korbus、Tatjana Friedmann、Christiane Wolff、Christina Marie Thiele、Franz-Josef Meyer-Almes
DOI:10.1016/j.bioorg.2014.10.004
日期:2014.12
A series of azobenzenealkylmaleimides (AMDs) with different spacer length was synthesized and coupled via Michael-Addition to a specific mutant of a bacterial histone deacetylase-like amidohydrolase (HDAH). Michaelis-Menten parameters (V-max and K-m) were employed to characterize the effect of both, the spacer length and the configuration (cis vs. trans) of the attached azobenzene moiety, on the HDAH enzyme activity. The photoswitch behavior of the AMD/enzyme conjugate activity was clearly influenced by the AMD spacer length. This study highlights the importance of steric rearrangement of the photoswitch with respect to the active site and describes a strategy to optimize the photocontrol of HDAH. (C) 2014 Elsevier Inc. All rights reserved.