A convenient synthesis of 13N-labelled azo compounds: A new route for the preparation of amyloid imaging PET probes
作者:Vanessa Gómez-Vallejo、José I. Borrell、Jordi Llop
DOI:10.1016/j.ejmech.2010.08.053
日期:2010.11
synthesis of 13N-labelled azo compounds is reported for the first time. The labelling strategy is based on trapping [13N]NO2− in an anion exchange resin. The reaction with primary aromatic amines in acidic media led to the formation of the corresponding diazonium salts, which were further reacted with aromatic amines and alcohols to yield the corresponding 13N-labelled azo derivatives with good radiochemical
在本文中,首次报道了一种快速,自动化的13种N-标记的偶氮化合物的合成方法。标记的策略是基于捕集[ 13 N] NO 2 -在阴离子交换树脂。与伯芳香胺在酸性介质中的反应导致形成相应的重氮盐,重氮盐进一步与芳香胺和醇反应生成相应的13 N-标记的偶氮衍生物,并具有良好的放射化学转化率(40.0-58.3%)。通过HPLC纯化后,可获得良好的放射化学收率(20.4–47.2%,已校正衰变)和放射化学纯度(> 99.9%)。这种方法可以很容易地应用于制备13种由非放射性前体的适当选择N-标记的偶氮衍生物。