The aim of this work is to improve physical properties and biological activities of the two flavanones hesperetin and naringenin by complexation with β-cyclodextrin (β-CD) and its methylated derivatives (2,6-di-O-methyl-β-cyclodextrin, DM-β-CD and randomly methylated-β-CD, RAMEB). The free energies of inclusion complexes between hesperetin with cyclodextrins (β-CD and DM-β-CD) were theoreticall...

In the current formulation of clinical use paclitaxel (PCX) is associated with solubilizers that may produce severe side effects. In this study, PCX was complexed to an amphiphilic cyclodextrin (CD), 6-O-CAPRO-beta-CD, capable of forming nanoparticles spontaneously in order to mask its physicochemical properties via the formation of inclusion complexes of the drug with amphiphilic CD before the...

The inclusion behavior of hydroxypropyl β-cyclodextrin and natural β-cyclodextrin was studied toward ketoprofen, in order to develop a new oral dosage form with enhanced dissolution rate and bioavailability, and to study the oral pharmacokinetics of ketoprofen in humans, following cyclodextrin complexation. Drug-cyclodextrin solid systems were prepared by kneading, co-evaporation, and freeze-dr...

Complexation of celecoxib with ß-cyclodextrin and hydroxypropyl-ß-cyclodextrin in the presence and absence of polyvinylpyrrolidone and the effect of polyvinylpyrrolidone on the solubilizing efficiency of cyclodextrins and on the dissolution rate of celecoxib from the cyclodextrin complexes were investigated. The phase solubility studies indicated the formation of celecoxib-ß-cyclodextrin and ce...

As a part of a systematic investigation of the inclusion compounds of plant growth regulators in Cyclodextrins (CDs) we report here the crystal structures of the complexes of 4-chlorophenoxyacetic acid (4CPA) encapsulated in -CD (4CPA/ -CD) and in heptakis(2,3,6-triO-methyl)-CD (4CPA/TM CD). 4CPA is considered as a sufficiently safe plant growth regulator, exhibiting only slightly toxic qualiti...

b-Cyclodextrin (b-CD) forms inclusion complexes (ICs) with adamantane-modified benzoxazines (2 benzoxazine and 3 benzoxazine). These benzoxazines can readily penetrate into the CD’s hydrophobic cavity, causing turbidity of their solutions, from which fine crystalline powders are obtained. We characterized these complexes by powder X-ray diffraction, C and C CP/MAS NMR spectroscopies, DSC, and T...

The structure of the inclusion complexes of β-cyclodextrin (β-CD) with daidzein and daidzin in D2O were investigated using NMR spectroscopy. For the β-CD and daidzein system, two types of 1:1 complexes were formed with the daidzein deeply inserted into the CD cavity with different orientations. For the β-CD/daidzin system, a 1:1 complex was formed with the flavonoid part of daidzin entering the...

Inclusions of lidocaine hydrochloride in cyclodextrins were prepared to obtain stable complexes compatible for association with chlorhexidine in a new gel formulation for use in urogenital applications. Two cyclodextrins, β-cyclodextrin and methyl-β-cyclodextrin, were used for encapsulating lidocaine hydrochloride through solubilization and kneading techniques. The lidocaine-cyclodextrin comple...