Cyclodextrins are cyclic oligosaccharides composed of glucose units arranged in a ring structure. These unique molecules have a hydrophobic cavity and hydrophilic exterior, making them excellent hosts for guest molecules through inclusion complexation. In organic synthesis, cyclodextrins serve as versatile tools for various applications. They can act as chiral selectors in chromatography, enabling the separation of enantiomers. Additionally, cyclodextrins are used as green solvents, facilitating reactions in aqueous environments while enhancing reaction selectivity. Furthermore, cyclodextrins find application as phase transfer catalysts, promoting reactions at the interface between immiscible phases. Their ability to encapsulate guest molecules also makes them valuable in drug delivery systems, where they can improve solubility, stability, and bioavailability of pharmaceutical compounds. Overall, cyclodextrins play a significant role in organic synthesis by providing efficient and environmentally friendly solutions to diverse synthetic challenges.
Title : Direct solar leaf-dehydration: physiochemistry, and practice on the island of Crete
Victor John Law, Technical University Dublin, Ireland
Title : Fighting antibiotic resistance: Eliminating implant infections in humans without antibiotics
Thomas Jay Webster, Brown University, United States