β-环糊精的选择性化学修饰

最近20多年来，外形似“锥筒”，腔内疏水、腔外亲水的环糊精（Cyclodextrin，CD）包括α、β、γ等，以其特有的结构在模拟酶、分子识别，以及食品、日用品、医药、化学工业和农业等众多领域深受广大科学工作者的重视。β-环糊精分子本身作为主体模型在具体应用中还有一定的局限性，为了获得更好的β-环糊精功能主体模型，对β-环糊精进行适当的选择性化学修饰是很有必要的。本文综述了环糊精的结构、性能及环糊精的改性方法和改性后环糊精的应用。

The cationic modification of β-Cyclodextrin

In the past 20 years, it has attracted significant interest of research to construct artificial enzymes, molecule recognition sensors and other functional models utilizing the cone-shaped cyclodextrins （CDs, including α, β, γ CD etc）,which process a hydrophobic cavity and a hydrophilic outside. As a multi- functional molecule, β-CD is proved to be a useful auxiliary in agriculture ,industry and pharmacy. However, the inherent defects of natural β-CD restrict its practical applications, the focus of our research was directed to the chemical-selective modification of β-CD, aiming to produce novel enzyme-like functional molecules with enhanced properties. This article introduces the structure, nature, modified method, application of modified β-cyclodextrin.