Tritium labeling of a γ-secretase inhibitor and two modulators as in vitro imaging agents
作者:Jonas Malmquist、Alexandra Bernlind、Johan Sandell、Peter Ström、Magnus Waldman
DOI:10.1002/jlcr.1955
日期:2012.2
The γ-secretase inhibitor dibenzazepine (DBZ) and the γ-secretase modulators 1 and AZ8349 were prepared as tritium-labeled compounds with high specific activity and radiochemical purity. [3H]DBZ was labeled via an iodinated precursor, [3H]1 was labeled by [3H]methylation of an O-desmethyl precursor, and [2-3H]AZ8349 was labeled via a tribromoacetyl precursor by catalytic hydrogenation. [3H]DBZ, [3H]1, and [2-3H]AZ8349 are promising in vitro imaging radioligands and have the potential to provide key information with regard to γ-secretase expression, function, stoichiometry, and pharmacology.
γ-分泌酶抑制剂二苯扎西平(DBZ)以及γ-分泌酶调节剂1和AZ8349被制备成氚标记的化合物,具有很高的比活度和放射化学纯度。[3H]DBZ通过碘化前体标记,[3H]1通过O-去甲基前体的[3H]甲基化标记,[2-3H]AZ8349通过三溴乙酰前体催化加氢标记。[3H]DBZ、[3H]1 和 [2-3H]AZ8349 是很有前途的体外成像放射性配体,有可能提供有关γ-分泌酶表达、功能、化学计量学和药理学的关键信息。