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Highly Functionalized β-Cyclodextrins by Solid-Supported Synthesis.

Nesrin Vurgun1, Mark Nitz1

  • 1Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada.

Chemistry (Weinheim an Der Bergstrasse, Germany)
|February 2, 2018
PubMed
Summary
This summary is machine-generated.

This study presents a new method for creating functionalized cyclodextrin (CD) derivatives. These CD-tripeptide conjugates can be used as sensors for detecting bile salts, offering potential in sensing and catalysis.

Keywords:
cyclodextrinfluorophorespeptidessensorsolid phase synthesis

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Area of Science:

  • Supramolecular Chemistry
  • Organic Synthesis
  • Analytical Chemistry

Background:

  • Cyclodextrins (CDs) are versatile host molecules with numerous applications.
  • Developing efficient methods for selective functionalization of CDs is crucial for expanding their utility.
  • Solid-phase synthesis offers advantages for library generation and purification.

Purpose of the Study:

  • To develop a novel method for the selective mono-functionalization of heptakis-[6-deoxy-6-(2-aminoethylsulfanyl)]-β-cyclodextrin (β-CD).
  • To demonstrate the utility of this method for creating a library of CD-tripeptide conjugates.
  • To evaluate the potential of these conjugates as sensors for bile salt detection.

Main Methods:

  • Selective mono-thiol functionalization of β-CD using covalent capture.
  • Immobilization of the functionalized β-CD onto PEGA resin via a disulfide bond.
  • Solid-phase synthesis of tripeptides using Fmoc-peptide chemistry.
  • Attachment of environmentally sensitive fluorophores to the released thiol.

Main Results:

  • High-yielding selective mono-functionalization of β-CD was achieved.
  • A library of CD-tripeptide conjugates was successfully synthesized on a solid support.
  • The resulting sensors demonstrated potential for differential sensing of bile salts.

Conclusions:

  • The described methodology provides a rapid and versatile route for synthesizing highly functionalized CD derivatives.
  • This approach enables the creation of tailored CD conjugates for applications in sensing, catalysis, and multivalent displays.
  • The developed CD-tripeptide sensors show promise for sensitive and selective bile salt detection.