High performance liquid chromatographic enantioseparation of chiral bridged polycyclic compounds on Chiralcel OD-H and Chiralpak OT(+) (Articolo in rivista)

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  • High performance liquid chromatographic enantioseparation of chiral bridged polycyclic compounds on Chiralcel OD-H and Chiralpak OT(+) (Articolo in rivista) (literal)
Anno
  • 2009-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1002/chir.20629 (literal)
Alternative label
  • Peluso P; Cossu S; Moretto F; Marchetti M (2009)
    High performance liquid chromatographic enantioseparation of chiral bridged polycyclic compounds on Chiralcel OD-H and Chiralpak OT(+)
    in Chirality (N.Y., N.Y. Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Peluso P; Cossu S; Moretto F; Marchetti M (literal)
Pagina inizio
  • 507 (literal)
Pagina fine
  • 518 (literal)
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  • http://onlinelibrary.wiley.com/doi/10.1002/chir.20629/abstract (literal)
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  • 21 (literal)
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  • 12 (literal)
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  • 5 (literal)
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  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
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  • Dipartimento di Chimica, Universita` Ca' Foscari di Venezia, Dorsoduro 2137, I-30123 Venezia, Italy; Istituto di Chimica Biomolecolare ICB CNR, sezione di Sassari, Trav. La Crucca 3, Reg. Baldinca, I-07040 Li Punti, Sassari, Italy (literal)
Titolo
  • High performance liquid chromatographic enantioseparation of chiral bridged polycyclic compounds on Chiralcel OD-H and Chiralpak OT(+) (literal)
Abstract
  • The HPLC enantiomeric separation of 29 racemic bridged polycyclic compounds was examined on commercially available Chiralcel OD-H and Chiralpak OT(+) columns. The separations were evaluated under normal-phase mode (hexane containing mobile phase) for Chiralcel OD-H and under normal-phase as well as under reversed-phase mode (pure MeOH, temperature 5°C) for Chiralpak OT(+). Almost all compounds were resolved either on Chiralcel OD-H or on Chiralpak OT(+), in some cases on both. The use of trifluoroacetic acid (TFA), as modifier of the hexanic mobile phase, had a beneficial effect on the enantioseparation of some polar and acidic compounds on Chiralcel OD-H. The influence of small chemical structural modifications of the analytes on the enantioseparation behavior is discussed. A structure-retention relationship has been observed on both stationary phases. This chromatographic evaluation may provide some information about the chiral recognition mechanism: in the case of Chiralcel OD-H, hydrogen bonding, - and distereoselective repulsive are supposed to be the major analyte-CSP interactions. In the case of Chiralpak OT(+), a reversed-phase enantioseparation could take place through hydrophobic interactions between the aromatic moiety of the analytes and the chiral propeller structure of the CSP. The synthesis of some unknown racemic bromobenzobicyclo[2.2.1] analytes is also described. (literal)
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