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Journal ArticleDOI

Eine neue Methode zur Synthese von Peptiden: Aktivierung der Carboxylgruppe mit Dicyclohexylcarbodiimid unter Zusatz von 1‐Hydroxy‐benzotriazolen

Wolfgang König, +1 more
- 01 Mar 1970 - 
- Vol. 103, Iss: 3, pp 788-798
TLDR
In this article, the authors show that 1-Hydroxy-benzotriazol and 1-hydroxy-acetyl carbodiimid-methode eignen sich als Zusatze bei der Dicyclohexylcarbodiimids-Methode zur Synthese von Peptiden, verhindern die N-Acyl-harnstoffbildung and fuhren in hoher Ausbeute.
Abstract
1-Hydroxy-benzotriazol sowie verschiedene kernsubstituierte 1-Hydroxy-benzotriazole eignen sich als Zusatze bei der Dicyclohexylcarbodiimid-Methode zur Synthese von Peptiden. Ihr Einflus auf die Racemisierung bei Peptidsynthesen wurde unter Anwendung des gaschromatographischen Racemisierungstests von Weygand u. Mitarbb.2) untersucht. Die neuen Zusatze senken die Racemisierung, verhindern die N-Acyl-harnstoffbildung und fuhren in hoher Ausbeute zu sehr reinen Peptiden.

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Tetrahydrofuran amino acids: Secondary structure in tetrameric and octameric carbopeptoids derived from a D-allo 5-(aminomethyl)tetrahydrofuran-2-carboxylic acid.

TL;DR: In this article, the synthesis of a D-allo-5-(azidomethyl)tetrahydrofuran-2-carboxylate as an amino acid precursor is reported from D-ribose.
Journal ArticleDOI

Labeling of amino acids and peptides with isotopic oxygen as followed by 17O-N.M.R.

TL;DR: 17O-chemical shifts of synthetic intermediates and of the final products were as expected for each functional group, and Linewidth data correlate with the molecular weights of the compounds prepared.
Journal ArticleDOI

Total Synthesis of the α‐Helical Eicosapeptide Antibiotic Alamethicin

TL;DR: The voltage-dependent membrane pore-forming polypeptide antibiotic alamethicin F 30 (Ac-Aib-Pro-Ala-Gly-Leu-Glu-Gln-Phl, 1) was synthesized by segment condensations as mentioned in this paper.
Journal ArticleDOI

Synthesis of Bicyclic Alkene-/Alkane-Bridged Nisin Mimics by Ring-Closing Metathesis and their Biochemical Evaluation as Lipid II Binders: toward the Design of Potential Novel Antibiotics

TL;DR: It was found that these AB(C)‐ring mimics were not able to induce membrane leakage; however, they acted by inhibiting nisin‐induced carboxyfluorescein release; this indicates their affinity toward lipid II.
Journal ArticleDOI

Multiple peptide synthesis using a single support (MPS3)

TL;DR: An automated multiple peptide synthesis method to synthesize, cleave, and purify several peptides simultaneously in a single batch has been developed and it has been found that DCC/HOBt gives the best coupling performance.
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