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Charge mapping in 3(10)-helical peptide chains by oxidation of the terminal ferrocenyl group.

Organic letters (2011-02-24)
Alessandro Donoli, Vanessa Marcuzzo, Alessandro Moretto, Claudio Toniolo, Roberta Cardena, Annalisa Bisello, Saverio Santi
ABSTRACT

Two series of 3(10)-helical peptides of different lengths and rigidity, based on the strongly foldameric α-aminoisobutyric acid and containing a terminal ferrocenyl unit, have been synthesized. Oxidation-state sensitive spectroscopic tags of helical peptides, the N-H groups, allowed mapping of the charge delocalization triggered by oxidation of the terminal ferrocenyl moiety and were monitored by IR spectroelectrochemistry.

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2-Aminoisobutyic acid, 98%
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