A novel five-lipoxygenase activity protein inhibitor labeled with carbon-14 and deuterium
作者:Bachir Latli、Matt Hrapchak、Joe J. Gao、Carl A. Busacca、Chris H. Senanayake
DOI:10.1002/jlcr.3319
日期:2015.7
2-[4-(3-(1R)-1-[4-(2-Aminopyrimidin-5-yl)phenyl]-1-cyclopropylethyl}-1,2,4-oxadiazol-5-yl)-1H-pyrazol-1-yl]-N,N-dimethylacetamide (1), is a novel and selective five-lipoxygenase activity protein (FLAP) inhibitor with excellent pharmacokinetics properties. The availability of a key chiral intermediate allowed the synthesis of [14C]-(1) in six radiochemical steps and in 47% overall radiochemical yield with a specific activity of 51 mCi/mmol using carbon-14 zinc cyanide. 2-Chloro-N,N-dimethyl-2H6-acetamide was prepared and condensed with a penultimate intermediate to give [2H6]-(1) in very high yield and in more than 99% isotopic enrichment.
2-[4-(3-(1R)-1-[4-(2-氨基嘧啶-5-基)苯基]-1-环丙基乙基}-1,2,4-恶二唑-5-基)-1H-吡唑-1-基]-N,N-二甲基乙酰胺(1)是一种新型选择性五脂氧合酶活性蛋白(FLAP)抑制剂,具有优良的药代动力学特性。关键手性中间体的可得性使得在六个放射化学步骤中合成了[14C]-(1),总体放射化学产率为47%,特异活性为51 mCi/mmol,使用了碳-14锌氰化物。2-氯-N,N-二甲基-2H6-乙酰胺被制备并与倒数第二个中间体缩合,得到[2H6]-(1),产率非常高,且同位素富集超过99%。