Study of binary systems of β-cyclodextrin with a highly potential anti-mycobacterial drug

  • V. Boldescu
  • I. Bratu
  • Gh. Borodi
  • I. Kacso
  • A. Bende
  • Gh. Duca
  • F. Macaev
  • S. Pogrebnoi
  • Z. Ribkovskaia
Original Article

Abstract

The present research paper is dedicated to the obtaining and physicochemical characterization of a highly potential anti-mycobacterial drug candidate with β-cyclodextrin (βCD). The active substance is a 1,3,4-oxadiazole derivative, 2-phenyl-5-{[(2-phenyl-1,3-dioxolan-2-yl)methyl]sulfanyl}-1,3,4-oxadiazole, further named DIOX. DIOX–βCD binary systems were obtained as a physical mixture and a lyophilized product with molar ratio between the main components equal to 1:1 and 1:2. The obtained systems were submitted to physicochemical characterization applying the following instrumental methods: infrared spectrometry, differential scanning calorimetry, and X-ray crystallographic analysis. Besides, a molecular modeling analysis has been performed. The research data suggested certain intermolecular interaction between DIOX and βCD, suggesting formation of a three-molecular inclusion complex DIOX:βCD, including one DIOX molecule and two molecules of βCD. The main parts of the DIOX molecule included in the hydrophobic cavity of the cyclodextrin molecules most probably are dioxolane cycle and two benzene rings.

Keywords

β-Cyclodextrin Anti-mycobacterial drugs 1,3,4-Oxadiazole derivatives Drug–cyclodextrin complex Tuberculosis 

Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • V. Boldescu
    • 1
  • I. Bratu
    • 2
  • Gh. Borodi
    • 2
  • I. Kacso
    • 2
  • A. Bende
    • 2
  • Gh. Duca
    • 3
  • F. Macaev
    • 4
  • S. Pogrebnoi
    • 4
  • Z. Ribkovskaia
    • 4
  1. 1.Department of Industrial and Ecological ChemistryState University of MoldovaChişinăuRepublic of Moldova
  2. 2.National Institute for Research and Development of Isotopic and Molecular TechnologiesCluj-NapocaRomania
  3. 3.Academy of Sciences of MoldovaChişinăuRepublic of Moldova
  4. 4.Institute of ChemistryAcademy of Sciences of MoldovaChişinăuRepublic of Moldova

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