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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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Journal ArticleDOI

Cholic acid as an architectural component in biomimetic/molecular recognition chemistry; synthesis of the first “cholaphanes”.

TL;DR: In this article, the first macrocyclic steroid derivatives intended for use in molecular recognition chemistry were obtained by cyclodimerization and subsequent deacetylation, with up to 40% overall yield from methyl cholate.
Journal ArticleDOI

The enzymatic synthesis of protected valine-5 angiotensin II amide-1.

TL;DR: An example of the use of proteolytic enzymes to facilitate the peptide synthesis by fragment condensation is provided for the preparation of protected valine-5 angiotensin II amide-1 using t-butoxycarbonylpeptides as a carboxyl component and a peptide ethyl ester as an amine component.
Book ChapterDOI

Peptide Synthesis and Self-Assembly

TL;DR: This chapter attempts to address the following issues: How can the authors synthesize a self-assembling peptide, what are the fundamental physical and chemical principles that underpin peptide self-assembly, and how can they learn to finely control peptideSelf-assembly.
Journal ArticleDOI

Determination of the kinetic parameters of Escherichia coli leader peptidase activity using a continuous assay: the pH dependence and time-dependent inhibition by beta-lactams are consistent with a novel serine protease mechanism.

TL;DR: A continuous assay for Escherichia coli LPase activity is described, based upon Ac-WSASALAKI-AMC (I) as the substrate, that can be monitored either spectrophotometrically or spectrofluorometrally.
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