N-(5-Fluoro-2-phenoxyphenyl)-N-(2-[131I]iodo-5-methoxybenzyl)acetamide: A Potent Iodinated Radioligand for the Peripheral-type Benzodiazepine Receptor in Brain
摘要:
To image the peripheral-type benzodiazepine receptor (PBR) in vivo, we previously developed two positron emission tomography (PET) ligands, N-(2-[C-11],5-dimethoxybenzyl)-N-(5-fluoro-2-phenoxyphenyl)acetamide ([C-11]1a) and its [F-18]fluoroethyl analogue ([F-18]1b), for the investigation of PBR in the living human brain. This time, using 1a as a leading compound, we designed two novel iodinated analogues, N-(5-fluoro-2-phenoxyphenyl)-N-(2-iodo-5-methoxybenzyl)acetamide (3a) and N-(2,5-dimethoxybenzyl)-N-(5-iodo-2-phenoxyphenyl)acetamide (3b) for the PBR imaging. Ligands 3 were synthesized by the iodination of tributystannyl precursors 10. Radiolabeling for 3 with I-131 was carried out by the reaction of 10 with [I-131]NaI using H2O2 as an oxidizing agent. In vitro competition experiments determined that 3a exhibited both high affinity and selectivity for PBR (IC50: 7.8 nM) vs CBR (> 1 mu M). Biodistribution study in mice determined that [I-131]3a had a high radioactivity level (1.69% dose/g) in the brain, and its distribution pattern in the brain was consistent with the known distribution of PBR in rodents. Ex vivo autoradiography of the rat brain gave visual evidence that [I-131]3a was a potent and specific radioligand for PBR.
Synthesis ofN-(2,5-dimethoxybenzyl)-N-(5-fluoro-2-phenoxyphenyl)[carbonyl-11C]acetamide ([carbonyl-11C]DAA1106) and analogues using [11C]carbon monoxide and palladium(0) complex
[EN] NON-STEROIDAL PROGESTERONE RECEPTOR MODULATORS<br/>[FR] MODULATEURS DE RECEPTEUR DE PROGESTERONE NON STEROIDES
申请人:AKZO NOBEL NV
公开号:WO2003084963A1
公开(公告)日:2003-10-16
The present invention provides compounds according to general Formula (I), a prodrug thereof, a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable salt of a prodrug thereof. More particularly, the present invention provides high affinity non-steroidal compounds which are agonists, partial agonists or antagonists of the progesterone receptor.
Synthesis ofN-(2,5-dimethoxybenzyl)-N-(5-fluoro-2-phenoxyphenyl)[carbonyl-11C]acetamide ([carbonyl-11C]DAA1106) and analogues using [11C]carbon monoxide and palladium(0) complex
Synthesis of [11C]FEDAA1106 as a new PET imaging probe of peripheral benzodiazepine receptor expression
作者:Min Wang、Mingzhang Gao、Gary D. Hutchins、Qi-Huang Zheng
DOI:10.1016/j.ejmech.2008.08.001
日期:2009.6
promising radioligands for positron emission tomography (PET) imaging of PBR. This study was designed to develop a new radiolabeled analog of [11C]DAA1106 and [18F]FEDAA1106, [11C]FEDAA1106, for PET imaging of PBR expression in brain and cancer. Precursor N-(5-fluoro-2-phenoxyphenyl)-N-(2-(2-fluoroethoxy)-5-hydroxybenzyl)acetamide (9) was synthesized in multiple steps with moderate to high chemical
The present invention provides compounds according to general Formula (I), a prodrug thereof, a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable salt of a prodrug thereof. More particularly, the present invention provides high affinity non-steroidal compounds which are agonists, partial agonists or antagonists of the progesterone receptor.
AGENTS FOR THERAPY EFFICACY MONITORING AND DEEP TISSUE IMAGING
申请人:Bornhop J. Darryl
公开号:US20080031823A1
公开(公告)日:2008-02-07
Compounds and methods related to NIR molecular imaging, in-vitro and in-vivo functional imaging, therapy/efficacy monitoring, and cancer and metastatic activity imaging. Compounds and methods demonstrated pertain to the field of peripheral benzodiazepine receptor imaging, metabolic imaging, cellular respiration imaging, cellular proliferation imaging as targeted agents that incorporate signaling agents.