Interactions of vinca alkaloid subunits with chiral amido[4]resorcinarenes: a dynamic, kinetic, and spectroscopic study

Botta B, Fraschetti C, Novara FR, Tafi A, Sacco F, Mannina L, Sobolev AP, Mattay J, Letzel M, Speranza M (2009)
Organic & Biomolecular Chemistry 7(9): 1798-1806.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The stereoselectivity of the reaction between (R)-(-)-2-butylamine and the diastereomeric proton-bound complexes of (+)-catharanthine (C) or (-)-vindoline (V) with some chiral amido[4]resorcinarenes has been investigated in the gas phase by ESI-FT-ICR-MS. The reaction stereoselectivity (0.56 < k(homo)/k(hetero) < 16.9) is found to depend critically on the functional groups present in the chiral pendants of the hosts. Rationalisation of the kinetic results is based on careful computational and spectroscopic studies of the most stable conformations of (+)-catharanthine and its protonated form in the isolated state and in water, as well as in a representative host structure. The emerging picture points to the relevant diastereomeric proton-bound complexes as quasi-degenerate, thus suggesting that their stereoselectivity in the guest exchange reaction is mostly due to kinetic factors. The results of this study may represent a starting point for a deeper comprehension of the intrinsic factors that endow these molecules, and their dimeric forms, with their biochemical properties.
Erscheinungsjahr
2009
Zeitschriftentitel
Organic & Biomolecular Chemistry
Band
7
Ausgabe
9
Seite(n)
1798-1806
ISSN
1477-0520
eISSN
1477-0539
Page URI
https://pub.uni-bielefeld.de/record/1634276

Zitieren

Botta B, Fraschetti C, Novara FR, et al. Interactions of vinca alkaloid subunits with chiral amido[4]resorcinarenes: a dynamic, kinetic, and spectroscopic study. Organic & Biomolecular Chemistry. 2009;7(9):1798-1806.
Botta, B., Fraschetti, C., Novara, F. R., Tafi, A., Sacco, F., Mannina, L., Sobolev, A. P., et al. (2009). Interactions of vinca alkaloid subunits with chiral amido[4]resorcinarenes: a dynamic, kinetic, and spectroscopic study. Organic & Biomolecular Chemistry, 7(9), 1798-1806. doi:10.1039/b900735k
Botta, B., Fraschetti, C., Novara, F. R., Tafi, A., Sacco, F., Mannina, L., Sobolev, A. P., Mattay, J., Letzel, M., and Speranza, M. (2009). Interactions of vinca alkaloid subunits with chiral amido[4]resorcinarenes: a dynamic, kinetic, and spectroscopic study. Organic & Biomolecular Chemistry 7, 1798-1806.
Botta, B., et al., 2009. Interactions of vinca alkaloid subunits with chiral amido[4]resorcinarenes: a dynamic, kinetic, and spectroscopic study. Organic & Biomolecular Chemistry, 7(9), p 1798-1806.
B. Botta, et al., “Interactions of vinca alkaloid subunits with chiral amido[4]resorcinarenes: a dynamic, kinetic, and spectroscopic study”, Organic & Biomolecular Chemistry, vol. 7, 2009, pp. 1798-1806.
Botta, B., Fraschetti, C., Novara, F.R., Tafi, A., Sacco, F., Mannina, L., Sobolev, A.P., Mattay, J., Letzel, M., Speranza, M.: Interactions of vinca alkaloid subunits with chiral amido[4]resorcinarenes: a dynamic, kinetic, and spectroscopic study. Organic & Biomolecular Chemistry. 7, 1798-1806 (2009).
Botta, Bruno, Fraschetti, Caterina, Novara, Francesca R., Tafi, Andrea, Sacco, Fabiola, Mannina, Luisa, Sobolev, Anatoli P., Mattay, Jochen, Letzel, Matthias, and Speranza, Maurizio. “Interactions of vinca alkaloid subunits with chiral amido[4]resorcinarenes: a dynamic, kinetic, and spectroscopic study”. Organic & Biomolecular Chemistry 7.9 (2009): 1798-1806.

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