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Cyclodextrin Inclusion of Medicinal Compounds for Enhancement of their Physicochemical and Biopharmaceutical Properties

[ Vol. 19 , Issue. 25 ]

Author(s):

Mino R. Caira*   Pages 2357 - 2370 ( 14 )

Abstract:


Owing to their wide structural diversity and unique complexing properties, cyclodextrins (CDs) find manifold applications in drug discovery and development. The focus of this mini-review is on their uses as ‘enabling excipients’ both in the context of early drug discovery and in subsequent optimisation of drug performance. Features highlighted here include descriptions of the structures of CDs, synthetic derivatisation to fine-tune their properties, the nature of inclusion complexation of drugs within the CD cavity, methodology for the study of free and complexed hosts in the solid state and in solution, the inherent pharmacological activity of several CDs and its utility, novel CD-based drug delivery systems, and the role of CDs in drug discovery and optimisation. Illustrative examples are generally based on research reported during the last two decades. Application of CDs to the optimisation of the performance of established drugs is commonplace, but there are many opportunities for the intervention of CDs during the early stages of drug discovery, which could guide the selection of suitable candidates for development, thereby contributing to reducing the attrition rate of new molecular entities.

Keywords:

Cyclodextrins, Cyclodextrin-based delivery systems, Drug delivery, Drug discovery, Host-guest complexation, Lipophilic drugs.

Affiliation:

Department of Chemistry, Centre for Supramolecular Chemistry Research, University of Cape Town, Rondebosch 7701

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