Design and NMR-Based Screening of LEF, a Library of Chemical Fragments with Different Local Environment of Fluorine.

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Title: Design and NMR-Based Screening of LEF, a Library of Chemical Fragments with Different Local Environment of Fluorine.
Authors: Vulpetti, Anna1 anna.vulpetti@novartis.com, Hommel, Ulrich1, Landrum, Gregory1, Lewis, Richard1, Dalvit, Claudio1,2 claudio.dalvit@iit.it
Source: Journal of the American Chemical Society. 9/16/2009, Vol. 131 Issue 36, p12949-12959. 11p. 1 Chart, 12 Graphs.
Subjects: Fluorine, Nuclear magnetic resonance, Carrier proteins, Chemical research, Halogens
Abstract: A novel strategy for the design of a fluorinated fragment library that takes into account the local environment of fluorine is described. The procedure, based on a fluorine fingerprints descriptor, and the criteria used in the design, selection, and construction of the library are presented. The library, named LEF (Local Environment of Fluorine), combined with 19F NMR ligand-based screening experiments represents an efficient and sensitive approach for the initial fragment identification within a fragment-based drug discovery project and for probing the presence of fluorophilic protein environments. Proper setup of the method, according to described theoretical simulations, allows the detection of very weak-affinity ligands and the detection of multiple ligands present within the same tested mixture, thus capturing all the potential fragments interacting with the receptor. These NMR hits are then used in the FAXS experiments for the fragment optimization process and for the follow-up screening aimed at identifying other chemical scaffolds relevant for the binding to the receptor. [ABSTRACT FROM AUTHOR]
Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Design and NMR-Based Screening of LEF, a Library of Chemical Fragments with Different Local Environment of Fluorine.
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  Data: <searchLink fieldCode="AR" term="%22Vulpetti%2C+Anna%22">Vulpetti, Anna</searchLink><relatesTo>1</relatesTo><i> anna.vulpetti@novartis.com</i><br /><searchLink fieldCode="AR" term="%22Hommel%2C+Ulrich%22">Hommel, Ulrich</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Landrum%2C+Gregory%22">Landrum, Gregory</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lewis%2C+Richard%22">Lewis, Richard</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Dalvit%2C+Claudio%22">Dalvit, Claudio</searchLink><relatesTo>1,2</relatesTo><i> claudio.dalvit@iit.it</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+the+American+Chemical+Society%22">Journal of the American Chemical Society</searchLink>. 9/16/2009, Vol. 131 Issue 36, p12949-12959. 11p. 1 Chart, 12 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Fluorine%22">Fluorine</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+magnetic+resonance%22">Nuclear magnetic resonance</searchLink><br /><searchLink fieldCode="DE" term="%22Carrier+proteins%22">Carrier proteins</searchLink><br /><searchLink fieldCode="DE" term="%22Chemical+research%22">Chemical research</searchLink><br /><searchLink fieldCode="DE" term="%22Halogens%22">Halogens</searchLink>
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  Label: Abstract
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  Data: A novel strategy for the design of a fluorinated fragment library that takes into account the local environment of fluorine is described. The procedure, based on a fluorine fingerprints descriptor, and the criteria used in the design, selection, and construction of the library are presented. The library, named LEF (Local Environment of Fluorine), combined with 19F NMR ligand-based screening experiments represents an efficient and sensitive approach for the initial fragment identification within a fragment-based drug discovery project and for probing the presence of fluorophilic protein environments. Proper setup of the method, according to described theoretical simulations, allows the detection of very weak-affinity ligands and the detection of multiple ligands present within the same tested mixture, thus capturing all the potential fragments interacting with the receptor. These NMR hits are then used in the FAXS experiments for the fragment optimization process and for the follow-up screening aimed at identifying other chemical scaffolds relevant for the binding to the receptor. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of the American Chemical Society is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1021/ja905207t
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      – Code: eng
        Text: English
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        StartPage: 12949
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      – SubjectFull: Fluorine
        Type: general
      – SubjectFull: Nuclear magnetic resonance
        Type: general
      – SubjectFull: Carrier proteins
        Type: general
      – SubjectFull: Chemical research
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      – SubjectFull: Halogens
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      – TitleFull: Design and NMR-Based Screening of LEF, a Library of Chemical Fragments with Different Local Environment of Fluorine.
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            NameFull: Hommel, Ulrich
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            NameFull: Dalvit, Claudio
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              M: 09
              Text: 9/16/2009
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              Y: 2009
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