Article (Scientific journals)
Theoretical and Experimental Vibrational Study of Miconazole and Its Dimers with Organic Acids: Application to the IR Characterization of Its Inclusion Complexes with Cyclodextrins
Barillaro, Valéry; Dive, Georges; Ziemons, Eric et al.
2008In International Journal of Pharmaceutics, 350 (1-2), p. 155-165
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Keywords :
Miconazole; Molecular modeling; Density functional theory; Normal mode; Miconazole/acid dimer; Cyclodextrin inclusion complexes
Abstract :
[en] The geometry, frequency and intensity of the vibrational bands of miconazole were derived from the density functional theory (DFT) calculations with the hybrid functional B3LYP and the 6-31G(d) basis set. Starting from the fully AM1 optimized geometries of miconazole/betaCD/acids complexes, the miconazole/acid dimers were reoptimized at the B3LYP/6-31G(d) level. Three acids were studied: maleic, fumaric and l-tartaric acids. To begin with the vibrational spectral data obtained from solid phase in mid FT-IR spectrum of miconazole and its dimers are assigned based on the results of the normal modes calculations. All the observed spectra and the calculated ones are found to be in good agreement. In a second step, theoretical results allowed the assignment of FT-IR spectrum for the miconazole/HPgammaCD inclusion complex produced by supercritical carbon dioxide treatment and confirmed the inclusion of miconazole. The experimental spectra for the miconazole/HPgammaCD/acids complexes prepared by supercritical carbon dioxide processing were also assigned using theoretical results. The results confirmed the presence of a genuine inclusion complex and also the interaction between miconazole and the acid.
Research center :
C.I.R.M.
Disciplines :
Pharmacy, pharmacology & toxicology
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Barillaro, Valéry
Dive, Georges ;  Université de Liège - ULiège > Centre d'ingénierie des protéines
Ziemons, Eric  ;  Université de Liège - ULiège > Chimie analytique
Bertholet, Pascal
Evrard, Brigitte  ;  Université de Liège - ULiège > Département de pharmacie > Pharmacie galénique
Delattre, Luc ;  Université de Liège - ULiège > Département de pharmacie > Département de pharmacie
Piel, Géraldine ;  Université de Liège - ULiège > Département de pharmacie > Pharmacie galénique et magistrale
Language :
English
Title :
Theoretical and Experimental Vibrational Study of Miconazole and Its Dimers with Organic Acids: Application to the IR Characterization of Its Inclusion Complexes with Cyclodextrins
Publication date :
10 February 2008
Journal title :
International Journal of Pharmaceutics
ISSN :
0378-5173
eISSN :
1873-3476
Publisher :
Elsevier Science Ltd, Amsterdam, Netherlands
Volume :
350
Issue :
1-2
Pages :
155-165
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 01 December 2008

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