使用金属催化原子转移的欧三烯酸的总合成
Chengying Zhou1, Weitian Qin1, Canhui Tu1
1Key Laboratory of Green Chemistry and Technology of the Ministry of Education, College of Chemistry Sichuan University, 29 Wangjiang Rd., Chengdu, Sichuan, 610064, China.
Angewandte Chemie (International ed. in English)
|March 20, 2025
概括
这项研究提出了欧三类和北三类的新型不对称总合成. 这些高效的合成路线使人们能够获得具有潜在生物活性的复杂自然产品.
科学领域:
- 有机化学 有机化学
- 自然产品的合成自然产品的合成
- 药用化学 医学化学
背景情况:
- 欧三类是天然产品的一类,以各种生物活动而闻名.
- 欧的现有合成途径有限,阻碍了进一步的研究和开发.
- 欧的结构复杂性带来了重要的合成挑战.
研究的目的:
- 为关键的欧三类和北三类开发高效和不对称的总合成.
- 建立强大的方法来构建euphanes的多环核.
- 为了使这些化合物能够用于进一步的生物评估.
主要方法:
- 采用了不对称的融合总合成策略.
- 关键步骤包括对环A构造进行对抗选择性Antilla 化和分子内激素循环化.
- 用Palladium催化的Liebeskind stannane-thioester合被用于将环A与CD系统连接起来.
- 使用金属催化原子转移 (MHAT) 的新型激素级联完成了多环结构.
- 后期阶段的功能化涉及二胺降解和MHAT/1,5-转移级联.
主要成果:
- 成功合成了四种化合物的不对称总合成:euphol,25,26,27-trisnor-3β-hydroxy-euphan-24-al,euphorbiumrin D和3-oxo-tirucall-7-ene-3,20-dione.
- 通过使用新型的激素级联反应,高效地构建复杂的多环核.
- 在晚期合成中,关键立体中心 (C20和C17) 的灾难选择性形成.
- 证明了MHAT在复杂分子合成中的实用性.
结论:
- 开发的合成途径提供了前所未有的进入欧三类和北类的机会.
- 这些方法对合成其他复杂的自然产品有价值.
- 合成的化合物可以用于进一步研究它们的生物活性.
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