总合成的四毒素和9-epiTetrodotoxin的四毒素
Peihao Chen1,2, Jing Wang2,3,4, Shuangfeng Zhang2
1School of Life Sciences, Peking University, Beijing, 100871, China.
Nature communications
|January 23, 2024
概括
研究人员开发了一种可扩展的合成Tetrodotoxin,一个强大的通道阻断剂具有麻醉性质,使用furfuryl酒精作为起始材料. 这一突破为这个复杂的分子及其类似物提供了新的途径.
科学领域:
- 有机化学 有机化学
- 合成化学 合成化学
- 药用化学 医学化学
背景情况:
- 铁毒素 (TTX) 和它的类似物是电压通路的强有力的阻断剂.
- 这些化合物具有显著的麻醉和止痛特性,使它们在疼痛管理和神经科学中引起了兴趣.
- 从历史上看,TTX的复杂结构对总合成构成了挑战.
研究的目的:
- 开发一种可扩展和高效的Tetrodotoxin和9-epiTetrodotoxin的不对称合成.
- 为了利用丰富且易于获得的化学原料,furfuryl酒精,用于合成.
- 建立一个强大的合成路径,可用于制备TTX类似物.
主要方法:
- 立体选择性迪尔斯-阿尔德反应用于构建光学纯净的环素核.
- 在高氧化环素框架上连续的功能组相互转换.
- 以SmI2为媒介的并发碎片,氧桥环开放,缩和Upjohn二化用于骨制成.
- 催化氧化基因裂变和酸性循环化,用于最终组装.
主要成果:
- 从furfuryl酒精中成功地进行了Tetrodotoxin和9-epiTetrodotoxin的可扩展的不对称合成.
- 通过一系列化学选择性转换,有效地引入密集的异原子替代物.
- 使用创新的还原性碎片和氧化策略构建高度氧化的核心结构.
- 快速组装TTX,无水-TTX,9-epiTTX和9-epi乳-TTX通过基分裂和循环.
结论:
- 开发的合成策略为Tetrodotoxin及其关键类型提供了一个实用且可扩展的途径.
- 这种合成克服了以前访问TTX的限制,可能使进一步的药理学研究和治疗开发成为可能.
- 该方法强调了现代合成有机化学在解决复杂的天然产品合成方面的力量.
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