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Exploratory spectroscopic and computational studies of the anion binding properties of methyl hyocholate in organic solvent

AutorFantin, Giancarlo; Fogagnolo, Marco; Delso, J. Ignacio; Merino, Pedro
Palabras claveQM-DFT calculations
NMR titrations
Anion binding
Methyl hyocholate
MD calculations
Fecha de publicación2017
EditorElsevier
CitaciónTetrahedron 73(13): 1698-1704 (2017)
ResumenThe binding properties of methyl hyocholate 1a toward F, Cl, Br and CHCO anions were explored by H and C NMR, ESI-MS measurements and computational calculations. The H NMR titration suggested that 1a forms a 1:1 complex with the selected anions. These complexes have also been detected by ESI-MS measurement even though the MS spectra showed that the stoichiometry of the predominant host-guest species in the gas phase is 2:1. C NMR and computational data suggested that the hydroxyl groups at C6 and C7 positions are more involved than the hydroxyl group at C3 position in the binding of spherical F, Cl, Br anions while in the case of the Y-shaped acetate ion two different conformers (in equilibrium) are present: the first showing interaction with both the two hydroxyl groups at C6 and C7 positions, the second also involving the participation of the third hydroxyl group at C3 position.
URIhttp://hdl.handle.net/10261/155818
DOI10.1016/j.tet.2017.02.015
Identificadoresdoi: 10.1016/j.tet.2017.02.015
issn: 0040-4020
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