Structure-activity relationships of talaumidin derivatives: Their neurite-outgrowth promotion in vitro and optic nerve regeneration in vivo
作者:Kenichi Harada、Katsuyoshi Zaha、Rina Bando、Ryo Irimaziri、Miwa Kubo、Yoshiki Koriyama、Yoshiyasu Fukuyama
DOI:10.1016/j.ejmech.2018.02.014
日期:2018.3
talaumidin (1). However, the preparation of optically active (–)-2 requires a complicated synthetic route. To explore new neurotrophic compounds that can be obtained on a large scale, we established a short step synthetic route for talaumidin derivatives and synthesized fourteen analogues based on the structure of (–)-2. First, we synthesized a racemic compound of (–)-2 (2a) and assessed its neurotrophic
(–)-Talaumidin(1),一种2,5-联芳基-3,4-二甲基四氢呋喃木脂素,显示出有效的神经营养活性,例如神经突增生和神经保护作用。以前,我们发现(–)-(1 S,2 R,3 S,4 R)-立体异构体2的活性比天然产物他洛米定(1)更为显着。但是,旋光性(–)- 2的制备需要复杂的合成路线。为了探索可以大规模获得的新的神经营养化合物,我们建立了talaumidin衍生物的短步合成路线,并基于(–)- 2的结构合成了十四种类似物。首先,我们合成了(–)- 2(2a)的外消旋化合物,并评估了其神经营养活性。我们发现外消旋体2a的神经营养特性与(–)- 2相似。使用相同的合成方法,合成了几种talaumidin衍生物,以优化芳环上的氧官能度。结果,双(亚甲基二氧基苯)衍生物2b具有最高的神经营养活性。此外,对2b的构效关系的研究表明,2,5-二苯基-四氢呋喃结构是必不可少的结构,THF