整体合成,结构阐明和扩大生物活性的icosalide A:效果的脂友性和胺替代以胺对其生物活性
Abha Dangi1,2,3, Bharat Pande3,4, Sonia Agrawal2,4
1Central NMR Facility, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, 411008 Pune, India. m.udayakiran@ncl.res.in.
实现了第一个icosalide A的全合成,这是一种抗菌性脱类. 这项研究解决了立体化学问题并探索了类似物,揭示了强大的抗菌和抗癌活性,包括对抗Mycobacterium tuberculosis.
科学领域:
- 有机化学 有机化学
- 药用化学 医学化学
- 生物化学 生物化学
背景情况:
- 伊科萨利德A是一种独特的抗菌脱皮,含有两种脂性β-氧酸.
- 之前,icosalide A的绝对立体化学是模两可的.
- 了解结构-活性关系对于开发新疗法至关重要.
研究的目的:
- 为了实现第一个icosalide A.A.的全合成.
- 通过NMR光谱学来解决icosalide A的立体化学反应.
- 为了合成和评估icosalide A的类似物对生物活性.
主要方法:
- Fmoc固体相合成与溶液相合成相结合,用于总合成.
- 核磁共振光谱用于结构阐明和立体化学确定.
- 12种icosalide A类似物对抗细菌和癌症细胞系的合成和生物评估.
主要成果:
- 成功完成了ICOSALIDE A的总合成及其绝对立体化学的解析.
- 核磁共振分析揭示了具有反平行β-sheet形状的良好折叠结构.
- 大多数同类药物表现出强大的抗菌活性 (MIC为12.5μg mL-1) 针对Bacillus thuringiensis和Paenibacillus dendritiformis.
- 伊科萨利德斯对结核菌和癌细胞系 (HeLa,ThP1) 具有显著的抑制作用 (MIC 2-10μg mL-1).
结论:
- 该研究提供了第一个icosalide A.的总合成和立体化学赋值.
- 伊科沙利德类似物显示出有前途的广泛抗菌和抗癌特性.
- 进一步优化icosalides可能会导致结核病,细菌感染和癌症的新治疗方法.
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