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Synlett 2011(13): 1917-1919
DOI: 10.1055/s-0030-1260950
DOI: 10.1055/s-0030-1260950
LETTER
© Georg Thieme Verlag
Stuttgart ˙ New York
Efficient Synthesis of Fmoc-Protected Azido Amino Acids
Further Information
Received
15 April 2011
Publication Date:
14 July 2011 (online)
Publication History
Publication Date:
14 July 2011 (online)

Abstract
The efficient two-step synthesis of Fmoc-protected l-azidoalanine and l-azidohomoalanine from readily available Fmoc-protected asparagine and glutamine, respectively, is reported. The synthetic route proceeds in good yield, requires no extra purification steps, and can be carried out on gram scale. The resulting azido amino acids are of sufficient purity for solid-phase peptide synthesis, as demonstrated in the synthesis of a model pentapeptide.
Key words
azides - amino acids - diazo transfer - Hofmann rearrangement - Fmoc solid-phase peptide synthesis
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