Abstract
Many bioactive substances face the problem of limited bioavailability, mainly due to low aqueous solubility and poor metabolic stability. Their complexation with drug delivery systems offers a more optimum pharmacological profile. Some of these drug delivery systems that have promising potential form complexes with bioactive compounds such as cyclodextrins and calixarenes. The monitoring of the success and the type of the complexation are of great importance and two-dimensional diffusion-ordered NMR spectroscopy (2D DOSY) is a valuable tool for the studying of these complexes and described as “NMR chromatography.” Herein we report the procedure for the complexation of the natural product quercetin in 2-hydroxypropyl-β-cyclodextrin and the anticancer drug temozolomide in p-sulfonatocalix[4]arene and the determination of the complexation with 2D DOSY spectroscopy.
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Acknowledgments
This work has been co-financed by the European Union and Greek national funds through the program “Support for Researchers with Emphasis on Young Researchers” (call code: EDBM34, ΚΕ 14995) and under the research title “Preparation and study of innovative forms of administration of pharmaceutical molecules targeting at improved pharmacological properties.”
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Chatzigiannis, C.M., Kiriakidi, S., Tzakos, A.G., Mavromoustakos, T. (2021). 2D DOSY NMR: A Valuable Tool to Confirm the Complexation in Drug Delivery Systems. In: Mavromoustakos, T., Tzakos, A.G., Durdagi, S. (eds) Supramolecules in Drug Discovery and Drug Delivery. Methods in Molecular Biology, vol 2207. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-0920-0_18
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DOI: https://doi.org/10.1007/978-1-0716-0920-0_18
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