A Simple Method of Preparation of Labelled Peptides Possessing Antibiotic Properties

Preparation of derivatives of peptide antibiotics polymyxin B and colistin- substituted on free amino groups by aminoacyl residues is described. The first procedure is based on the condensation of the antibiotic with active ester of a suitably protected amino acid. The second one makes use of Woodwa...

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Veröffentlicht in:Zeitschrift für Naturforschung. B, A journal of chemical sciences A journal of chemical sciences, 1971-05, Vol.26 (5), p.451-453
Hauptverfasser: Havránek, Miloš, Vereš, Karel
Format: Artikel
Sprache:eng
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Zusammenfassung:Preparation of derivatives of peptide antibiotics polymyxin B and colistin- substituted on free amino groups by aminoacyl residues is described. The first procedure is based on the condensation of the antibiotic with active ester of a suitably protected amino acid. The second one makes use of Woodward’s reagent by condensation of the antibiotic with a protected amino acid. The following compounds were prepared: glycyl- C-polymyxin B and glutaminyl-polymyxin B and glycylcolistin, also under conditions suitable for a radioactive synthesis. All the preparations preserve a substantial part of the biological activity comparable with polymyxin B and colistin.
ISSN:0932-0776
1865-7117
DOI:10.1515/znb-1971-0513