Synthesis and Study of New β-Cyclodextrin 'Dimers' Having a Metal Coordination Center and Carboxamide or Urea Linkers

Florence Sallas, Alain Marsura, Virginie Petot, I. Pintér, J. Kovács, Laszlo Jicsinszky

Research output: Article

46 Citations (Scopus)

Abstract

The synthesis of new 'bridged' β-cyclodextrin (β-CD) 'dimers' 7-12 was successfully achieved by two one-pot reactions from β-CD (3) and 6A-azido-6A-deoxy-β-CD (4). The 'phosphine imine' reaction was shown to be a superior approach compared to the Mitsunobu reaction as coupling strategy for the preparation of these 'dimers'. NMR Data, along with molecular-modelling calculations, suggest a 'helical-like' arrangement for the phenanthro-line-diyl-linked 'dimer' derivative 9. Complexation properties of 9 were established by UV-VIS-spectrophotometric titration toward four metals. Among them CuII or EuIII ions were complexed selectively by 9, but no complexation occurred wish LaIII and ZnII. In addition a specific and interesing esterase activity toward the phosphodiester bond of bis(4-nitrophenyl) phosphate anion was found in the case of the CuIIcomplex of 9.

Original languageEnglish
Pages (from-to)632-645
Number of pages14
JournalHelvetica Chimica Acta
Volume81
Issue number4
Publication statusPublished - 1998

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phosphine
Imines
Cyclodextrins
Esterases
ureas
Urea
Dimers
Anions
Metals
dimers
Ions
Complexation
synthesis
metals
Molecular modeling
Titration
phosphines
titration
imines
phosphates

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Synthesis and Study of New β-Cyclodextrin 'Dimers' Having a Metal Coordination Center and Carboxamide or Urea Linkers. / Sallas, Florence; Marsura, Alain; Petot, Virginie; Pintér, I.; Kovács, J.; Jicsinszky, Laszlo.

In: Helvetica Chimica Acta, Vol. 81, No. 4, 1998, p. 632-645.

Research output: Article

Sallas, Florence ; Marsura, Alain ; Petot, Virginie ; Pintér, I. ; Kovács, J. ; Jicsinszky, Laszlo. / Synthesis and Study of New β-Cyclodextrin 'Dimers' Having a Metal Coordination Center and Carboxamide or Urea Linkers. In: Helvetica Chimica Acta. 1998 ; Vol. 81, No. 4. pp. 632-645.
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