1998
DOI: 10.1002/(sici)1099-0682(199806)1998:6<729::aid-ejic729>3.0.co;2-m
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Catalytic Formation of Oligopeptides from α-Amino Acid Esters with (p-Cymene)ruthenium(II) Complexes

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Cited by 15 publications

(7 citation statements)
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“…Here, we have studied reactions with sulfur-containing amino acids l -cysteine and l -methionine, which are known to play important roles in the metabolic chemistry of platinum anticancer drugs . In general, the biological chemistry of ruthenium arene complexes is relatively unexplored, although there have been several reports of the isolation of amino acid and peptide adducts and their use as synthetic reagents , or as chiral catalysts. , …”
Section: Discussionmentioning
confidence: 99%
“…In the cyclopentadienyl complex [(η 5 -C 5 Me 5 )Ru( l -Met)], methionine has been reported to be tridentate forming five- and six-membered chelate rings. Other examples of bis(chelate) complexes with five- and six- or seven-membered rings are the half-sandwich Ru(II) arene complexes with l -methionyglycinate and β-, γ-amino acid esters 24a. The ethylenediamine ligand in complex 1 prevents methionine chelation.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…Here, we have studied reactions with sulfur-containing amino acids l -cysteine and l -methionine, which are known to play important roles in the metabolic chemistry of platinum anticancer drugs . In general, the biological chemistry of ruthenium arene complexes is relatively unexplored, although there have been several reports of the isolation of amino acid and peptide adducts and their use as synthetic reagents , or as chiral catalysts. , …”
Section: Discussionmentioning
confidence: 99%
“…In the cyclopentadienyl complex [(η 5 -C 5 Me 5 )Ru( l -Met)], methionine has been reported to be tridentate forming five- and six-membered chelate rings. Other examples of bis(chelate) complexes with five- and six- or seven-membered rings are the half-sandwich Ru(II) arene complexes with l -methionyglycinate and β-, γ-amino acid esters 24a. The ethylenediamine ligand in complex 1 prevents methionine chelation.…”
Section: Discussionmentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…With repeated addition of α‐amino acid esters the coordinated peptide is successively lengthened at the N‐terminus and the half‐sandwich complex can be considered as catalyst (Scheme ). Such a reaction sequence has been already used to synthesize chain lengths up to nine glycine residues at the [(p‐cymene)RuCl] fragment (Equation (6)) 42…”
Section: Iterative Frequence Specific Peptide Synthesis At Half‐samentioning
confidence: 99%
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.
“…Die Verlängerung der Peptidkette am N-Terminus erfolgt vermutlich, wie von Yamada [2] für die Peptidbildung an Cu II vorgeschlagen, und die Peptide lassen sich mit HCl in Methanol vom Metall abspalten. Kürzlich konnte gezeigt werden, daß durch sukzessive Zugabe von Glycinester auch höhere Peptide am Rutheniumatom aufgebaut werden können [11] und auch βund γ-Aminosäureester sowie ein N,O-Glycinat-Ruthenium-Komplex zur Peptid-Synthese verwendet werden können [12].…”
unclassified
“…Metallorganische Peptide können massenspektrometrisch nachgewiesen werden [11,26]. Massenspektroskopische Methoden finden seit mehr als 20 Jahren Anwendung bei der Peptidsequenzierung [27].…”
Section: Schemaunclassified
Exaggerated anticipatory anxiety is common in social anxiety disorder (SAD). Neuroimaging studies have revealed altered neural activity in response to social stimuli in SAD, but fewer studies have examined neural activity during anticipation of feared social stimuli in SAD. The current study examined the time course and magnitude of activity in threat processing brain regions during speech anticipation in socially anxious individuals and healthy controls (HC). Method Participants (SAD n = 58; HC n = 16) underwent functional magnetic resonance imaging (fMRI) during which they completed a 90s control anticipation task and 90s speech anticipation task.