Synthesis 2022; 54(22): 4895-4906
DOI: 10.1055/s-0040-1720045
short review

Ring-System-Based Conformational Switches and their Applications in Sensing and Liposomal Drug Delivery

Hang Su
a   Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
b   Practice Innovations Center, Changchun University of Chinese Medicine, Changchun, Jilin, 130021, P. R. of China
,
a   Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
› Author Affiliations
The China Scholarship Council (CSC grant no. 202008220154) is thanked for funding H.S.


Abstract

In the past decades, a great number of stimuli-responsive systems have been developed to be used as drug-delivery systems with high sensitivity and selectivity in targeted therapy. Despite promising results, the current stimuli-responsive systems suffer from the complexity of preparation, as most novel stimuli-responsive systems are based on polymers. Small molecules have often been neglected as candidates for application for stimuli-responsive systems. Recently, structures based on six-membered ring molecules or bicyclic molecules have been developed into conformational switches working through conformational interconversion. These single conformational switches have significantly reduced the complexity of material preparation compared to polymers or copolymers. In this review, we focus on ring-system-based conformational switches that are involved in sensors and smart drug-delivery systems. We hope that this review will shed light on ring-system-based single conformational switches for use in the development of stimuli-responsive systems.

1 Introduction
2 Conformation Switches Based On Bispidine Derivatives
3 Conformation Switches Based On Cycloalkanes
4 Conformation Switches Based On Carbohydrates
5 Conclusion



Publication History

Received: 03 June 2022

Accepted after revision: 09 August 2022

Article published online:
29 September 2022

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