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The c-f bond as a tool for controlling molecular conformation. the preparation and conformational analysis of beta-fluoroamides

Obiettivo

The C-F bond is the most polar bond in organic chemistry. Unlike other carbon to halogen bonds, they are strong and unreactive. When C-F bonds are introduced into organic compounds they adopt preferred conformations relative to other functional groups as a consequence of stereoelectronic effects. Recent research indicates that the C.F bond can be used as a design tool to influence the preferred conformation of biologically significant molecules, such as peptides. It should be noted of course that the fluorine atom is sterically small and only a little larger than hydrogen, thus the replacement of the research objectives are: - The synthesis of enantiomerically pure alpha-fluoro-Beta-alanine from L-asparagine. The route will follow literature chemistry until the final step, witch will involve a diazotisation/HF reaction. - Preparation of short peptides using this fluorinated amino acid. The methods will follow standard amino acid/peptide protection deprotection protocols. - An analysis of the conformation of the prepared peptides will be carried out using NMR methods and where appropriate X-ray crystal structure analysis ( of short di and tri peptides) as well as CD. The programme will be experimentally challenging, but it should demonstrate a powerful role for fluorine in medicinal and pharmaceutical chemistry.

Campo scientifico (EuroSciVoc)

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Meccanismo di finanziamento

RGI - Research grants (individual fellowships)

Coordinatore

UNIVERSITY OF ST ANDREWS
Contributo UE
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Indirizzo
Purdie Building
KY16 9ST ST ANDREWS
Regno Unito
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