Synthesis of [<sup>3</sup>H] and [<sup>2</sup>H<sub>6</sub>]AZD6642, an inhibitor of 5-lipoxygenase activating protein (FLAP)
作者:Åsa Lindelöf、Cecilia Ericsson、Roger Simonsson、Göran Nilsson、Gunnar Grönberg、Charles S. Elmore
DOI:10.1002/jlcr.3409
日期:2016.7
An AstraZeneca effort to identify a 5-lipoxygenase activating protein inhibitor with good drug-like properties resulted in the identification of AZD6642. To further understand its drug metabolism and pharmacokinetic properties, it was required labeled with tritium. The tritiation of AZD6642 was effected by Ir-catalyzed exchange chemistry to give an average of one tritium per molecule. Additionally, a stable isotope labeled version of AZD6642 was required to support bioanalytical studies. The synthesis originated from [2H6]acetone which was converted to the trimethylsilyl cyanide adduct and subsequently reduced to give 2-(aminomethyl)-[1,1,1,3,3,3-2H6]propan-2-ol in good yield. Carbonylation to give an amide adduct resulted in an intermediate that was converted to the final compound in four steps.
阿斯利康致力于鉴定一种具有良好药物样特性的 5-脂氧合酶激活蛋白抑制剂,结果鉴定出了 AZD6642。为了进一步了解其药物代谢和药代动力学特性,需要用氚标记。 AZD6642 的氚化作用是通过 Ir 催化交换化学实现的,每个分子平均含有一个氚。此外,需要稳定同位素标记的 AZD6642 版本来支持生物分析研究。该合成源自[2H6]丙酮,将其转化为三甲基甲硅烷基氰化物加合物,随后还原以良好产率得到2-(氨甲基)-[1,1,1,3,3,3-2H6]丙-2-醇。羰基化产生酰胺加合物,产生中间体,该中间体分四步转化为最终化合物。