诺斯科科-库库比特[10]uril表现出同型异质异质主义
Wei-Hao Huang1, Simin Liu, Peter Y Zavalij
1Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA.
Journal of the American Chemical Society
|November 16, 2006
概括
研究人员合成了nor-seco-cucurbit[10]uril (ns-CB[10]),它可以结合通常在较小的cucurbiturils中发现的客体. 这种新的宏观循环表现出复杂的选择性,包括异构和异构.
科学领域:
- 超分子化学 超分子化学
- 有机合成 有机合成
- 主机和客人的化学反应
背景情况:
- 黄瓜 (CBs) 是宏环宿主,以其独特的腔体结构和结合客体的特性而闻名.
- 比如CB[6]和CB[7]这样的较小的库库比图里尔结合了特定的客体,但较大的宏循环为更复杂的相互作用提供了潜力.
- 诺斯科-塞科-库库比图里尔代表了一种具有修改结构的新型宏观循环类.
研究的目的:
- 为了合成和描述一个新的nor-seco-cucurbit[10]uril (ns-CB[10]) 宏循环.
- 通过使用各种分析技术,研究ns-CB[10]的客人绑定能力.
- 探索ns-CB[10]与不同客体的选择性和复杂化行为.
主要方法:
- 在50°C的温度下,在缩的HCl中,糖和甲的凝结反应.
- 核磁共振 (1H NMR) 谱学用于结构阐明.
- 用X射线结晶学进行最终的结构确定和客体复合分析.
主要成果:
- 证实了nor-seco-cucurbit[10]uril (ns-CB[10]) 的成功合成.
- ns-CB [10] 证明了封装客人的能力,这些客人通常由较小的cucurbiturils (CB [6],CB [7]) 绑定.
- 复杂化研究揭示了多种选择性模式,包括顶部/中部异构体,性客体的二元选择性结合和性效应.
结论:
- 诺-塞科-库库比特[10]uril (ns-CB[10]) 是一种具有独特双腔结构的新型宏循环.
- ns-CB [10] 展出了多功能客户识别和绑定功能,在其腔内容纳客人.
- 在ns-CB[10]三元复合体中观察到的选择性现象为设计先进的宿主-客系统开辟了新的途径.
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