Regioselective ortho alkylation of nitro indole, carbazole, benzothiophene and benzofuran
作者:Scott G. Lamont、Craig S. Donald、J. Lyman Feron、Sam D. Groombridge
DOI:10.1016/j.tetlet.2015.11.036
日期:2015.12
carbazoles, benzothiophenes and benzofurans are important motifs in the pharmaceutical industry. Herein we report a novel, regioselective method to introduce alkyl substituents into positionortho of nitro groups by the addition of a Grignardreagent followed by subsequent oxidation with DDQ.
DERIVATIVES OF DIBENZOTHIOPHENE IMAGING OF alpha-7 NICOTINIC ACETYLCHOLINE RECEPTORS
申请人:THE JOHNS HOPKINS UNIVERSITY
公开号:US20160235869A1
公开(公告)日:2016-08-18
The presently disclosed subject matter provides non-invasive methods for imaging, quantifying α7 nicotinic cholinergic receptors, and diagnosing a disease or condition associated with α7-nAChRs. Methods for preparing radiolabeled derivatives of dibenzothiophene and compounds provided thereof also are provided.
[EN] PET RADIOTRACERS<br/>[FR] RADIOTRACEURS POUR TEP
申请人:NORDBERG AGNETA
公开号:WO2022255915A1
公开(公告)日:2022-12-08
The compounds of the invention are ASEM analogs with differentortho- and para-substitutions that can be labelled with3H and/or11C to be used as PET radiotracers capable of binding to α7-nAChR both in vitro andin vivoin a subject body. The PET radiotracers thereby enable visualization and quantification of α7-nAChR in various target tissues, including monitoring the distribution of α7-nAChRs in such a target tissue. The compounds exhibit of high binding affinity and specificity towards α7-nAChR and are able to pass the blood-brain barrier (BBB).
Cullinane et al., Journal of the Chemical Society, 1936, p. 1435
作者:Cullinane et al.
DOI:——
日期:——
Derivatives of Dibenzothiophene for Positron Emission Tomography Imaging of α7-Nicotinic Acetylcholine Receptors
作者:Yongjun Gao、Kenneth J. Kellar、Robert P. Yasuda、Thao Tran、Yingxian Xiao、Robert F. Dannals、Andrew G. Horti
DOI:10.1021/jm401184f
日期:2013.10.10
A new series of derivatives of 3-(1,4-diazabicyclo[3.2.2]nonan-4-yl)dibenzo[b,d]thiophene 5,5-dioxide with high binding affinities and selectivity for alpha 7-nicotinic acetylcholine receptors (alpha 7-nAChRs) (K-i = 0.4-20 nM) has been synthesized for positron emission tomography (PET) imaging of alpha 7-nAChRs. Two radiolabeled members of the series [F-18]7a (K-i = 0.4 nM) and [F-18]7c (K-i = 1.3 nM) were synthesized. [F-18]7a and [F-18]7c readily entered the mouse brain and specifically labeled alpha 7-nAChRs. The alpha 7-nAChR selective ligand 1 (SSR180711) blocked the binding of [F-18]7a in the mouse brain in a dose-dependent manner. The mouse blocking studies with non-alpha 7-nAChR central nervous system drugs demonstrated that [F-18]7a is highly alpha 7-nAChR selective. In agreement with its binding affinity the binding potential of [F-18]7a (BPND = 5.3-8.0) in control mice is superior to previous alpha 7-nAChR PET radioligands. Thus, [F-18]7a displays excellent imaging properties in mice and has been chosen for further evaluation as a potential PET radioligand for imaging of alpha 7-nAChR in non-human primates.