Efficient synthesis of an (aminooxy) acetylated-somatostatin derivative using (aminooxy)acetic acid as a 'carbonyl capture' reagent

Research output: Contribution to journalJournal articleResearchpeer-review

  • Gábor Mezö
  • Ildikó Szabó
  • István Kertész
  • Rózsa Hegedüs
  • Erika Orbán
  • Leurs, Ulrike
  • Szilvia Bösze
  • Gábor Halmos
  • Marilena Manea
Owing to the high chemoselectivity between an aminooxy function and a carbonyl group, oxime ligation is one of the most preferred procedures for the preparation of peptide conjugates. However, the sensitivity of (aminooxy)acetylated peptides to ketones and aldehydes makes their synthesis and storage difficult. In our study, we established the efficient synthesis of an (aminooxy)acetylated-somatostatin derivative in the presence of free (aminooxy)acetic acid, which was used as a 'carbonyl capture' reagent in the final cleavage step. This (aminooxy)acetylated compound was further used for the chemoselective ligation (oxime bond formation) with daunorubicin and 4-fluorobenzaldehyde leading to the formation of conjugates with potential applications in targeted cancer chemotherapy and positron emission tomography.
Original languageEnglish
JournalJournal of Peptide Science
Issue number1
Pages (from-to)39-46
Number of pages8
Publication statusPublished - Jan 2011
Externally publishedYes

ID: 45967553