A method has been developed for nanoparticles synthesis based on oligomers of sulfobutyl ether β-cyclodextrin (SBE-β-CD) and their structure has been studied by FTIR spectroscopy. The physicochemical properties of “guest−host” inclusion complexes formed by SBE-β-CD and its oligomers with moxifloxacin have been investigated. It has been shown that, as compared with SBE-β-CD, the synthesized oligomers have an increased affinity for moxifloxacin: the dissociation constants for the complexes of monomeric and oligomeric SBE-β-CD are (1.0 ± 0.3) × 10−4 and nearly 5 × 10−6 M, respectively. The binding efficiency increases due to the multy-point interaction of a moxifloxacin molecule with functional groups of the oligomeric carrier. SBE-β-CD oligomers are promising carriers for drugs, in particular, fluoroquinolone-based antibacterial agents, and may be used for the development of new compositions with improved solubility, bioavailability, and prolonged drug release.
Colloid Journal – Springer Journals
Published: Jun 1, 2018
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