The physico-chemical properties of β-lactosyl-closo-orthocarborane in water solution were investigated by multinuclear NMR,13C NMR relaxation, and ab-initio calculations. This molecule represents a potentially selective boron carrier in Boron Neutron Cancer Therapy (BNCT) and exhibits amphiphilic characteristics. Its structural and dynamic features were studied comparing NMR data acquired in both aggregating and non-aggregating conditions. Aggregates are characterized by rapid exchange with the bulk and by high sensitivity to temperature conditions. An unusually stable intra-molecular CH....O hydrogen bond was found to persist in water solution both for the free molecules and after aggregate formation. At the same time, inter-molecular specific CH ...O interactions do not seem effective in the aggregate formation process, which appears to take place only on non-specific hydrophobic basis.
Bonechi, C., Ristori, S., Martini, S., Panza, L., Martini, G., Rossi, C., et al. (2007). Solution Behavior of a Sugar-based Carborane for Boron Neutron Capture Therapy: a Nuclear Magnetic Resonance Investigation. BIOPHYSICAL CHEMISTRY, 125(2-3), 320-327 [10.1016/j.bpc.2006.09.004].
Solution Behavior of a Sugar-based Carborane for Boron Neutron Capture Therapy: a Nuclear Magnetic Resonance Investigation
BONECHI, CLAUDIA;ROSSI, CLAUDIO;DONATI, ALESSANDRO
2007-01-01
Abstract
The physico-chemical properties of β-lactosyl-closo-orthocarborane in water solution were investigated by multinuclear NMR,13C NMR relaxation, and ab-initio calculations. This molecule represents a potentially selective boron carrier in Boron Neutron Cancer Therapy (BNCT) and exhibits amphiphilic characteristics. Its structural and dynamic features were studied comparing NMR data acquired in both aggregating and non-aggregating conditions. Aggregates are characterized by rapid exchange with the bulk and by high sensitivity to temperature conditions. An unusually stable intra-molecular CH....O hydrogen bond was found to persist in water solution both for the free molecules and after aggregate formation. At the same time, inter-molecular specific CH ...O interactions do not seem effective in the aggregate formation process, which appears to take place only on non-specific hydrophobic basis.
| File | Dimensione | Formato | |
|---|---|---|---|
|
BiophysChem2007.pdf
non disponibili
Tipologia:
Post-print
Licenza:
NON PUBBLICO - Accesso privato/ristretto
Dimensione
632.88 kB
Formato
Adobe PDF
|
632.88 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/11365/31974
Attenzione
Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo