The binary pyrene/heptakis-(6-amino-6-deoxy)-β-cyclodextrin complex: A suitable chiral discriminator. Spectrofluorimetric study of the effect of some α-amino acids and esters on the stability of the binary complex

Francesca D'Anna, Paolo Maria Giuseppe Lo Meo, Serena Riela, Renato Noto, Michelangelo Gruttadauria, Paolo Lo Meo, Paolo Lo Meo, Paolo Lo Meo, Serena Riela, Michelangelo Gruttadauria, Francesca D'Anna, Renato Noto

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14 Citazioni (Scopus)

Abstract

The effect of some α-amino acids and their esters on the stability of the binary pyrene/heptakis-(6-amino-6-deoxy)-β-cyclodextrin (py/am-β-CD) complex has been studied by means of fluorescence spectroscopy at two pH values (8.0 and 9.0). The binary complex was generally stabilized by adding the ternary agent at pH 8.0. A more varied substrate effect is observed at pH 9.0 where am-β-CD is present in the uncharged form. The conditional constant (β2) values determined by L/D α-amino acids show that the binary complex is a suitable receptor for chiral recognition. The enantiomer selectivity values obtained, ranging from 1.2 up to 7.4, are generally higher than those reported for α-amino acids and their derivatives by modified cyclodextrins. © 2002 Elsevier Science Ltd. All rights reserved.
Lingua originaleEnglish
pagine (da-a)1755-1760
Numero di pagine6
RivistaTETRAHEDRON-ASYMMETRY
Volume13
Stato di pubblicazionePublished - 2002

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.1600.1606???
  • ???subjectarea.asjc.1600.1605???
  • ???subjectarea.asjc.1600.1604???

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