Design and synthesis of novel imidazole derivatives as potent inhibitors of allene oxide synthase(CYP74)
作者:Keimei Oh、Noboru Murofushi
DOI:10.1016/s0968-0896(02)00422-4
日期:2002.12
series of novel imidazole derivatives and tested them in a bioassay as AOS inhibitors using a purified recombinant AOS enzyme isolated from Arabidopsis and expressed in E. coli. Among the derivatives prepared, heptyl 8-[1-(2,4-dichlorophenyl)-2-imidazolylethoxy]octanoate (k) was found to be the most potent inhibitor, with an IC(50) of 10+/-5 nM, which is 250,000-fold and 1,000,000-fold more potent than
丙二烯氧化合酶(AOS)是植物中脂蛋白途径中的关键酶,可导致茉莉酸和其他茉莉酸(JAs),这是植物防御信号网络的重要信号介体。AOS使用氢过氧亚麻酸作为氧供体以及底物,因此13(S)-氢过氧亚麻酸向氧杂环丁烷的生化转化可以在没有氧气和NADPH的情况下进行。我们设计了一系列新型咪唑衍生物的合成物,并使用从拟南芥中分离并在大肠杆菌中表达的纯化重组AOS酶在生物测定中作为AOS抑制剂进行了测试。在制备的衍生物中,发现八-[1-(2,4-二氯苯基)-2-咪唑并甲氧基]辛酸庚酯(k)是最有效的抑制剂,IC(50)为10 +/- 5 nM,是250,000倍和1,000,