在宏观循环中曲的π-结合:非对称的螺旋hexenolides A和B的总合成
Lian-Dong Guo1, Yanting Wu1, Xin Xu1
1Department of Chemistry, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong, 999077, China.
Angewandte Chemie (International ed. in English)
|November 21, 2023
概括
研究人员首次实现了罕见的抗癌螺旋hexenolides A 和 B 的非对称总合成. 这一突破克服了与曲 π 结合形成应变宏循环的挑战,为药物化学发展铺平了道路.
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:
- 具有曲π结合的宏循环很少见,并且在合成上具有挑战性.
- 含有紧张曲的1,3,5-三烯宏环的螺旋hexenolides,代表了一个重要的合成障碍.
- 之前对胺等相关化合物的合成工作激发了新的策略.
研究的目的:
- 为了实现第一个不对称的螺旋hexenolides A 和 B 的总合成.
- 开发一种强大的合成策略,用于构建具有高度紧张的非平面 π 结合的宏循环.
- 为了评估合成的螺旋hexenolides的体外抗癌活性.
主要方法:
- 对于宏观循环化而言,战略性的闭环转化论 (RCM).
- 通过双重脱水,形成变形的1,3,5-三联.
- 通过RCM和爱尔兰-克莱森重新排列,对螺旋酸盐片段进行酶选择性构造.
主要成果:
- 成功合成A (>20毫克) 和B (>50毫克) 螺旋烯酸的不对称总合成.
- 展示了一种创建紧张,曲 π 结合宏循环的新方法.
- 螺旋hexenolides A 和 B 在体外表现出强大的细胞毒性对人类癌细胞 (IC50 1.213.3 μM).
结论:
- 开发的合成策略可以访问具有独特π结合的复杂宏循环.
- 螺旋hexenolides A 和 B 具有显著的抗癌潜力,而螺旋hexenolide A 显示出更高的功效.
- 这些发现强调了酒精部分对生物活性的重要性,指导了未来的药物化学努力.
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