Complexation of sulfonamides with β-cyclodextrin studied by experimental and theoretical methods
The complex formation between three structurally related sulfonamides (sulfadiazine (SDZ), sulfamerazine (SMR), and sulfamethazine (SMT)) and β-cyclodextrin (β-CD) was studied, by exploring its structure affinity relationship. In all the cases, 1:1 stoichiometries were determined with different rela...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2010 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/189122 |
| Acceso en línea: | http://hdl.handle.net/11336/189122 |
| Access Level: | acceso abierto |
| Palabra clave: | COMPLEXATION CYCLODEXTRINS MOLECULAR MODELING NMR SPECTROSCOPY PHASE SOLUBILITY STUDIES SOLUBILITY SULFONAMIDES https://purl.org/becyt/ford/3.1 https://purl.org/becyt/ford/3 |
| Sumario: | The complex formation between three structurally related sulfonamides (sulfadiazine (SDZ), sulfamerazine (SMR), and sulfamethazine (SMT)) and β-cyclodextrin (β-CD) was studied, by exploring its structure affinity relationship. In all the cases, 1:1 stoichiometries were determined with different relative affinities found by phase solubility (SDZ:β-CD>SMR: β-CD>SMT:β-CD) and nuclear magnetic resonance (NMR) (SMT:β-CD>SMR:β-CD>SDZ:β-CD) studies. The spatial configurations determined by NMR were in agreement with those obtained by molecular modeling, showing that SDZ included its aniline ring into β-CD, while SMR and SMT included the substituted pyrimidine ring. Energetic analyses demonstrated that hydrophobicity is the main driving force to complex formation. © 2010 Wiley-Liss, Inc. and the American Pharmacists Association. |
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