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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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New fluorogenic substrates for the study of secondary specificity of prolyl oligopeptidase

TL;DR: The secondary specificity of prolyl oligopeptidase (POP) has been studied by using a series of fluorogenic substrates containing the highly fluorescent 7-amino-4-methyl-2-quinolinone (AMeq) marker.
Journal ArticleDOI

The Importance of the Peptide Bond at Position 2 in HCO‐Met‐Leu‐Phe‐OMe Analogues as shown by Studies on Human Neutrophils

TL;DR: The formylpeptides formyl‐methionyl‐Nmethylleucyl‐ phenylaline methyl ester and analogue 2 were synthesized in order to investigate the role of the amide bond at position 2 on biological activities on human neutrophils.
Journal ArticleDOI

A novel bleomycin model compound bearing hydrophilic steric factor exhibited high oxygen activating capacity

TL;DR: In this paper, the bleomycin (BLM) model compound bearing hydrophilic steric factor was synthesized and physicochemical properties of the metal complexes were studied, showing that the metal complex exhibited BLM like reversible redox cycle and higher oxygen activating activity compared to the corresponding model compound.
Journal ArticleDOI

Total Synthesis of Minosaminomycin

TL;DR: A component of the antibiotic minosaminomycin (1) was synthesized from D-inositol by catalytic oxidation of an axial hydroxyl group followed by reduction of the ketoxime as discussed by the authors.
Journal ArticleDOI

Importance of the third amino acid residue of oxytocin for its action on isolated rat uterus: study of relationship between hormone conformation and activity.

TL;DR: A reorientation of the tyrosine sidechain, caused by the presence of a neighboring aromatic sidechain in position 3, away from the surface of the 20-membered ring is though to remove the phenolic hydroxyl group from its optimal position in the "active center" of oxytocin and give rise to the reduced efficacy of oxypressin.
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