dc.contributor.author |
Béni, Szabolcs |
|
dc.contributor.author |
Szakács, Zoltán |
|
dc.contributor.author |
Csernák, Orsolya |
|
dc.contributor.author |
Barcza, Lajos (1932-2007) |
|
dc.contributor.author |
Noszál, Béla |
|
dc.date.accessioned |
2016-02-18T11:07:44Z |
|
dc.date.available |
2016-02-18T11:07:44Z |
|
dc.date.issued |
2007 |
|
dc.identifier |
33846521876 |
|
dc.identifier.citation |
pagination=167-174;
journalVolume=30;
journalIssueNumber=2;
journalTitle=EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES; |
|
dc.identifier.uri |
http://repo.lib.semmelweis.hu//handle/123456789/3090 |
|
dc.identifier.uri |
doi:10.1016/j.ejps.2006.10.008 |
|
dc.description.abstract |
Host–guest interactions in various protonation forms of the anticancer drug imatinib with beta-cyclodextrin (CD) and randomly methylated beta-CD (RAMEB) have been investigated using techniques of proton magnetic resonance spectroscopy (1H NMR), phase solubility, pH-potentiometry and electrospray ionization mass spectrometry (ESI-MS). Phase-solubility analysis showed AL-type diagram with beta-CD, which suggested the formation of 1:1 inclusion complexes. The 1:1 stoichiometry was confirmed by potentiometry in aqueous solution and by ESI-MS in the gas phase. Charge-specific stability constants of the neutral, mono-, di-, and tricationic forms of imatinib were determined for both the beta-CD and RAMEB. Stability of the beta-CD complexes shows an unexpected minimum at the monoprotonated form, while a stepwise decrease with increasing guest charge was observed for RAMEB. The 1:1 complex stoichiometry and stability constants of selected imatinib protonation species were verified by 1H NMR titrations. Two-dimensional rotating frame nuclear Overhauser effect spectroscopy (ROESY) experiments were carried out to identify the interacting host–guest moieties. The observed ROESY cross-peaks indicated spatial proximities between several aromatic hydrogens of imatinib and β-CD protons, revealing that the inclusion occurs by accommodation of the benzamide ring of imatinib. |
|
dc.relation.ispartof |
urn:issn:0928-0987 |
|
dc.title |
Cyclodextrin/imatinib complexation: Binding mode and charge dependent stabilities |
|
dc.type |
Journal Article |
|
dc.date.updated |
2016-02-15T10:06:47Z |
|
dc.language.rfc3066 |
en |
|
dc.identifier.mtmt |
1076335 |
|
dc.identifier.wos |
000244378100007 |
|
dc.contributor.department |
SE/GYTK/Gyógyszerészi Kémiai Intézet |
|
dc.contributor.department |
ELTE/TTK/Kémiai Intézet |
|
dc.contributor.institution |
Semmelweis Egyetem |
|
dc.contributor.institution |
Eötvös Loránd Tudományegyetem |
|