Compounds having the general formula (I)
wherein R
1
, R
2
, R
3
, R
4
, R
5
and X are as described herein, compositions including the compounds and methods of using the compounds.
Imaging Mutant Huntingtin Aggregates: Development of a Potential PET Ligand
作者:Longbin Liu、Michael E. Prime、Matt R. Lee、Vinod Khetarpal、Christopher J. Brown、Peter D. Johnson、Patricia Miranda-Azpiazu、Xuemei Chen、Daniel Clark-Frew、Samuel Coe、Randall Davis、Anthony Dickie、Andreas Ebneth、Simone Esposito、Elise Gadouleau、Xinjie Gai、Sebastien Galan、Samantha Green、Catherine Greenaway、Paul Giles、Christer Halldin、Sarah Hayes、Todd Herbst、Frank Herrmann、Manuela Heßmann、Zhisheng Jia、Alexander Kiselyov、Adrian Kotey、Thomas Krulle、John E. Mangette、Richard W. Marston、Sergio Menta、Matthew R. Mills、Edith Monteagudo、Sangram Nag、Martina Nibbio、Laura Orsatti、Sabine Schaertl、Christoph Scheich、Joanne Sproston、Vladimir Stepanov、Marie Svedberg、Akihiro Takano、Malcolm Taylor、Wayne Thomas、Miklós Toth、Darshan Vaidya、Katarina Vanräs、Derek Weddell、Ian Wigginton、John Wityak、Ladislav Mrzljak、Ignacio Munoz-Sanjuan、Jonathan A. Bard、Celia Dominguez
DOI:10.1021/acs.jmedchem.0c00955
日期:2020.8.13
Huntington’s disease (HD) pathology. A high-affinity ligandspecific for mHTT aggregates could serve as a positron emission tomography (PET) imaging biomarker for HD therapeutic development and disease progression. To identify such compounds with binding affinity for polyQ aggregates, we embarked on systematic structural activity studies; lead optimization of aggregate-binding affinity, unbound fractions
The present invention relates to radiolabeled compounds of formula (I) wherein either A, B, R1, R2, is labeled with a radionuclide selected from 3H, 11C and 18F and its use for imaging alpha synuclein and/or Abeta deposits in mammals.
Tritium <i>O</i>-Methylation of <i>N</i>-Alkoxy Maleimide Derivatives as Labeling Reagents for Biomolecules
作者:Martin R. Edelmann、Thorsten Muser
DOI:10.1021/acs.bioconjchem.1c00202
日期:2021.5.19
core, (2) O-methylation by the use of commercially available [3H]methyl nosylate, and (3) deprotection by retro-Diels–Alder reaction. With our procedure, N-hydroxyalkyl maleimide derivatives can be labeled in overall radiochemical yields of 13–15% and in >98% radiochemical purity. The major advantage of N-alkoxy maleimides in comparison to N-alkylated maleimides such as N-ethylmaleimide is their lower
Identification of Three Novel Radiotracers for Imaging Aggregated Tau in Alzheimer’s Disease with Positron Emission Tomography
作者:Luca C. Gobbi、Henner Knust、Matthias Körner、Michael Honer、Christian Czech、Sara Belli、Dieter Muri、Martin R. Edelmann、Thomas Hartung、Isabella Erbsmehl、Sandra Grall-Ulsemer、Andreas Koblet、Marianne Rueher、Sandra Steiner、Hayden T. Ravert、William B. Mathews、Daniel P. Holt、Hiroto Kuwabara、Heather Valentine、Robert F. Dannals、Dean F. Wong、Edilio Borroni
DOI:10.1021/acs.jmedchem.7b00632
日期:2017.9.14
disease and are prominent targets for novel therapeutics as well as for biomarkers for diagnostic in vivo imaging. In recent years much attention has been devoted to the discovery and development of new PET tracers to image tau aggregates in the living human brain. Access to a selective PET tracer to image and quantify tau aggregates represents a unique tool to support the development of any novel therapeutic
tau和β淀粉样蛋白(Aβ)斑块的聚集体构成了阿尔茨海默氏病的组织病理学标志,是新型疗法以及用于体内诊断的生物标志物的重要靶标。近年来,人们对新型PET示踪剂的发现和开发投入了大量精力,以描绘人脑中tau聚集体的图像。获得选择性PET示踪剂以成像和定量tau聚集体的方法代表了一种独特的工具,可支持针对tau病理形式的任何新型治疗剂的开发。本文所述研究的目的是鉴定这种新颖的放射性示踪剂。这项工作的结果是,我们发现了三种新颖的PET示踪剂(2-(4- [ 11 [ C]甲氧基苯基]咪唑并[1,2- a ]吡啶7-胺7]([ 11 C] RO6924963),N- [ 11 C]甲基-2-(3-甲基苯基)咪唑并[1,2- a ]嘧啶-7-胺8([ 11 C] RO6931643)和[ 18 F]对tau神经原纤维缠结具有高亲和力的2-(6-氟吡啶-3--3-基)吡咯并[2,3- b:4,5- c