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Digitale Medien

Metallkomplexe mit biologisch wichtigen Lisganden, LXXXLXXIX. Mitteilung: Lit.. (η3:η3-C10H16)Ru(IV)-Komplexe mit α-Aminocarboxylaten, α-Aminosäureestern und Peptidestern als Liganden (1995)

Severin, Kay ; Mihan, Shahram ; Beck, Wolfgang

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 128 (1995), S. 1117-1125

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ISSN: 0009-2940

Schlagwort(e): 1,7-Dimethylocta-2,6-diene-1,8-diyl ; Ruthenium complexes ; α-Amino carboxylates ; α-Amino acid esters ; Peptide esters ; Chemistry ; Inorganic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Metal Complexes Containing Biologically Important Ligands, LXXXLXXIX. Mitteilung: Lit. . - (η3:η3-C10H16)Ru(IV) Complexes with α-Amino Carboxylates, α-Amino Acid Esters, and Peptide Esters as LigandsReactions of the chloro-bridged bis(allyl) complex [(η3:η3-C10H16)Ru(Cl)(μ-Cl)]2 with α-amino carboxylates and α-amino acid esters afford the complexes (η3:η3-C10H16)(Cl)RuNH2CHRCO2 (2) and (η3:η3-C10H16)(Cl)2-RuNH2CHRCO2R′ (3). Abstraction of chloride from 3 by Ag+ gives the N,O-chelates [(η3:η3-C10H16)(Cl)RuNH2CHRCO2R′]+BF4 (4). Cysteine methyl ester forms the N,S-chelate complex (η3:η3-C10H16)(Cl)RuNH2CH(CO2CH3)CH2S (5), and with histidine methyl ester a dinuclear complex 6 with N,N-histidine bridge is obtained. Compound 3d with L-PheOEt as ligand was characterized by X-ray diffraction.

Zusätzliches Material: 3 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/cber.19951281110

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Digitale Medien

Metal Complexes of Biologically Important Ligands, LXXXVI. Organometallic Complexes of Ruthenium(II), Rhodium(III), Iridium(III), and Gold(I) with Cinchona AlkaloidsDedicated to Dr. Janina Altman on the occasion of her 65th birthday. (1996)

Missling, Christopher ; Mihan, Shahram ; Polborn, Kurt ; [weitere]

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 331-335

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ISSN: 0009-2940

Schlagwort(e): Quinine ; Cinchonidine ; Quinidine ; Chinchonine ; Ruthenium complexes ; Gold complexes ; Rhodium complexes ; Iridium complexes ; Chemistry ; Inorganic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: The following chiral organometallic complexes of the cinchona alkaloids quinine (L1), cinchonidine (L2), quinidine (L3), cinchonine (L4) were prepared: [(η5-C5H5)(Ph3P)(OC)-Ru(L)]BF4 (1: L=L1; 2: L=L2; 3: L=L3), ClAuL1 (4), [(η5-C5Me5)(Cl2)Ir(L)] (5: L=L1; 6: L=L2; 7: L=L4), [(η5-C5Me5)(Cl2)Rh(L2)] (8), [(η6-p-cymene)(Cl2)Ru(L)] (9: L=L1; 10: L=L2; 11: L=L4). In all complexes the tertiary nitrogen atom of the cinchona alkaloids is bound to the metal. Complexes 5 - 11 are formed as mixtures of isomers. Elimination of HCl from 10 and 11 gives the neutral N,O-chelate complexes (η6-p-cymene)(Cl)Ru(L2 - H+) (13) and (η6-p-cymene)-(Cl)Ru(L4 - H+) (14) which were structurally characterized by X-ray diffraction.

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/cber.19961290314

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Digitale Medien

Catalytic Formation of Oligopeptides from α-Amino Acid Esters with (p-Cymene)ruthenium(II) Complexes (1998)

Hoffmüller, Winfried ; Maurus, Michael ; Severin, Kay ; [weitere]

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 1998 (1998), S. 729-731

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ISSN: 1434-1948

Schlagwort(e): Catalysis ; Oligomerization ; Organometallics ; Oligopeptides ; Ruthenium complexes ; Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: Consecutive addition of one-equivalent portions of glycine ethyl ester to [(p-cymene)Ru(GGGOMe-H+)Cl] leads to considerable amounts of (tetra- to nonapeptide)ruthenium complexes in a one-pot reaction, in which the (p-cymene)RuCl fragment acts as a catalyst. The analogous reaction with alanine methyl ester affords AGGG and AAGGG complexes as the main products. The course of these metal-catalyzed peptide oligomerizations has been followed by mass spectrometry. The synthesis and characterization of the pentapeptide complex [(C6Me6)Ru(GGGGGOMe-H+)] is reported.

Materialart: Digitale Medien

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