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  • Palladium complexes  (7)
  • α-Amino acids  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, LX. Metallkomplexe von 3′-Azido-3′-desoxythymidin (AZT) und 3′-Isocyan-3′-desoxythymidin (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 1541-1548 
    Details
    ISSN: 0009-2940
    Keywords: Gold complexes ; Palladium complexes ; Platinum complexes ; Rhodium complexes ; Iridium complexes ; 3′-Azido-3′-deoxythymidine ; 3′-Isocyano-3′-deoxythymidine ; Anti-HIV ; Antiinflammatory activity ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Biologically Important Ligands, LX.  -  Metal Complexes of 3′-Azido-3′-deoxythymidine (AZT) and 3′-Isocyano-3′-deoxythymidineMetal complexes of N-3-deprotonated 3′-azido-3′-deoxythymidine (AZT  -  H+), (AZT  -  H+)AuPR3 (R = Me, Et, Ph) (2, 3, 4), trans-(AZT  -  H+)2Pd(NH3)2 (5), [(n-Bu3P)(AZT  -  H+) M(μ-Cl)2M(AZT  -  H+)(n-Bu3P)] (M = Pd, Pt) (6, 7), trans-(Ph3P)2Pd(AZT  -  H+)2 (8), cis-(Ph3P)2Pt(AZT -  H+)(Cl) (9), and complexes of 3′-isocyano-3′-deoxythymidine (L), (Et3P)(L)- PdCl, (11), (12), (n-Bu3P)(L)PtCl2 (13), [(Ph3P)2(L)PtCl](BF4) (14), (η5-C5Me5)(L)RhCl2 (15), and (η5-C5Me5)(L)IrCl2 (16) have been prepared and characterized by IR and NMR spectra, 2 by X-ray crystallography. 2, 4, and 9 show an anti-HIV activity very similar to AZT; 2 exhibits antiinflammatory activity.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240710
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  • 2
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, IL. Palladium- und Platin(II)-Komplexe von Thioglycinat und Thioalaninat (1989)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 253-257 
    Details
    ISSN: 0009-2940
    Keywords: Palladium complexes ; Platinum complexes ; Thioglycinate ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Metal complexes with biologically important Ligands, IL. - Palladium and Platinum(II) complexes of Thioglycinate and ThioalaninateFrom chloro phosphane complexes and thioglycinate or thioalaninate the chelate complexes (1) (r2 = Et, Ph, n-Bu) and (2) (M = Pd, Pt) have been obtained. Spectroscopic data and the X-ray analysis of 1a (R1 = H; R2 = Et) indicate bonding of the α-Amino acylchloride complexes Cl2Pt(NH2CHRCOCl)2 react with thiophenol to give Cl2Pt(NH2CHRCOSPh)2 (4) (R = H, CHMe2).
    Notes: Aus Chloro-phosphan-Metallverbindungen werden mit Thioglycinat bzw. Thioalaninat die Chelat-Komplexe (1) (r2 = Et, Ph, n-Bu) und (2) (M = Pd, Pt) erhalten. Nach den spektroskopischen Daten und der Kristallstrukturbestimmung von 1a (R1 = H; R2 = Et) koordinieren die Anionen der α-Aminothiosäuren über die Aminogruppe und das S-Atom. Aus α-Aminosäure-chlorid-Komplexen Cl2Pt(NH2CHRCOCl)2 entstehen mit Thiophenol in heterogener Reaktion die Verbindungen Cl2Pt-(NH2CHRCOSPh)2 (4) (R = H, CHMe2) mit α-Aminothiosäure-S-phenylester-Liganden.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19891220207
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  • 3
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, LI. Reaktionen von α-Aminosäuren mit Hexachloropalladat(IV). Stabilisierung von 1-Pyrrolin an Palladium(II) (1989)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 1031-1034 
    Details
    ISSN: 0009-2940
    Keywords: Hexachloropalladate(IV) ; α-Amino acids ; 1-Pyrroline and 1-pyrroline-2-carboxylate as ligands ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Metal Complexes of Biologically Important Ligands, LI. - Reactions of α-Amino Acids with Hexachlorpalladate(IV). Stabilization of 1-Pyrroline at Palladium(II)Hexachloropalladate(IV) reacts with an excess of α-amino acids under reduction of the metal to give palladium(II) chelate complexes PdL2 (1) (L = anion of L-Val, L-Leu, L-Phe, L-Glu, L-Gln, DL-indoline-2-carboxylic acid). Chloro-bridged complexes LPd(μ-Cl)2PdL (2) are obtained from [PdCl6]2- and L-Asp, L-Asn, and L-thioproline, respectively. With L-Met, L-Cys, L-LeuOMe, and L-PheOMe Pd(II) complexes 3-5 are also isolated. L-Pro is dehydrogenated and decarboxylated by [PdCl6]2- to yield the Pd(II) complex 6 with 1-pyrroline-2-carboxylate and 1-pyrroline as ligands. L-Cys-Cys and L-Ala yield Pd(IV) complexes 8, 9.
    Notes: Hexachloropalladat(IV) setzt sich mit α-Aminosäuren im Überschuß unter Reduktion des Metalls zu Palladium(II)-Chelatkomplexen PdL2 (1) um (L = Anion von L-Val, L-Leu, L-Phe, L-Glu, L-Gln, DL-Indolin-2-carbonsäure). Chloro-verbrückte Palladium(II)-Komplexe LPd(μ-Cl)2PdL (2) bilden sich bei der Umsetzung von [PdCl6]2- mit L-Asp, L-Asn, und L-Thioprolin. Auch mit L-Met, L-Cys, L-LeuOMe und L-PheOMe werden Palladium(II)-Komplexe (3-5) isoliert. L-Pro wird durch [PdCl6]2- dehydriert bzw. decarboxyliert, wobei der Palladium(II)-Komplex 6 mit 1-Pyrrolin-2-carboxylat und dem in freiem Zustand instabilen 1-Pyrrolin als Liganden erhalten wird. L-Cys-Cys und L-Ala bilden Palladium(IV)-Komplexe (8, 9).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19891220603
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  • 4
    Electronic Resource
    Electronic Resource
    Metallkomplexe von Farbstoffen  -  Übergangsmetall-Komplexe mit 2-(1,3-Dioxo-2-indanyliden)benzimidazolinen (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 61-66 
    Details
    ISSN: 0009-2940
    Keywords: Benzimidazoline, 2-(1,3-dioxo-2-indanylidene)-, as chelate ligand ; Copper complexes ; Nickel complexes ; Palladium complexes ; Platinum complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Dyes  -  Transition Metal Complexes of Mono- and Dianions of 2-(1,3-Dioxo-2-indanylidene)-benzimidazolines2-(1,3-Dioxo-2-indanylidene)benzimidazolines (L) (1 - 6) react with metal salts and chloro-bridged complexes in the presence of NaH to give the mono and bis-N,O-chelate complexes (L  -  H+)2M (M=Cu, Pd, Ni) (7 - 9), (L  -  H+)M(PR3)Cl (M=Pd, Pt; 10 - 15 and (L  -  2H+)[Pt(PEt3)Cl]2 (16, 17). The electronic spectra of the bis(chelate) complexes show a large bathochromic shift of the absorptions in the visible region as compared to the free ligands. The structures of (L  -  H+)Pd(Cl)-(PnBu3) (10) and of (L  -  2H+)[Pt(Cl)PEt3)]2 (16) have been determined by X-ray crystallography. The two heterocyclic planes in 16 are bent along the elongated central C=C bond [143.2(12)pm] which gives a hip-roof-like structure.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921250111
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  • 5
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, LXVII[1]. Synthese von α-Aminosäuren aus Palladium(II)- und Rhodium(III)-koordinierten Iminen und Oximen von α-OxocarboxylatenHerrn Professor Dr. Wolfgang Steglich zum 60. Geburtstag gewidmet. (1993)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 126 (1993), S. 2421-2427 
    Details
    ISSN: 0009-2940
    Keywords: Palladium complexes ; Rhodium complexes ; α-Amino acids ; 2-Iminocarboxylate as ligand ; Chiral glycine ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Biologically Important Ligands, LXVII[1]. - Synthesis of α-Amino Acids from Palladium(II)- and Rhodium(III)-Coordinated Imines and Oximes of α-OxocarboxylatesThe bis-chelate complexes Pd[O2CC(R1)=NOR2]2 (1) and Pd[O2CC(R1)=NR2]2 (2, R2 optically active substituent) are synthesized by template condensation of an α-oxocarboxylic acid with a hydroxylamine or amine component, respectively. Similarly, the Rh(III) complexes Cp*Rh(Cl)[O2CC(R)=N(CHMePh)] (3a: R = H, 3b: R = Me) were obtained from α-oxocarboxylic acids and optically active 1-phenylethylamine. Catalytic hydrogenation of 1 and 2 gives directly the free α-amino acids with, in case of 2, ee's between 0 and 36%. Nucleophilic attack by the carbanions of RC(O)CH2CO2Et and H2NCH(CO2Et)2 at the imino carbon atom of 3a leads to the α-amino carboxylato complexes 4 and 5. - Compounds 4a and 5 have been characterized by X-ray diffraction. Reaction of 3a with NaBH4 or NaBD4 followed by decomposition of the complex with HCl yields N-substituted glycine and N-substituted α-deuterio-glycine, respectively. The diastereoselectivity (70:30) of the α-deuteration could be determined by NMR spectroscopy.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19931261113
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  • 6
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, LXX. Synthese, Stereochemie und Reaktionen von Ruthenium(II) und Osmium(II)-Komplexen mit α-Aminocarboxylat-LigandenHerrn Professor Helmut Werner zum 60. Geburtstag gewidmet. (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 615-620 
    Details
    ISSN: 0009-2940
    Keywords: Ruthenium complexes ; Osmium complex ; Hydrido complexes ; α-Amino acids ; Oxidative Addition ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Biologically Important Ligands, LXX[1].- Synthesis, Stereochemistry and Reactions of Ruthenium(II) and Osmium(II) Complexes with α-Amino CarboxylatesHerrn Professor Helmut Werner zum 60. Geburtstag gewidmet.The reactions of MHCl(CO)(PPh3)3 with salts of α-amino acids give the hydrido-N,O-chelate complexes MH(CO)(NH2CHR-COO)(PPh3)2 (1a-g;) M = Ru, Os). Complexes 1a-c can alternatively be prepared by oxidative addition of the appropriate α-amino acid to Ru(CO)3(PPh3)2. The crystal structure of 1b has been determined by an X-ray structural analysis. The leucinato compound 1c is an effective catalyst for the decomposition of formic acid. In contrast, reactions of RuHCl-(CO)(PPh3)3 with α-amino acids afford the chloro-N,O-che-late complexes RuCl(CO)(NH2CHRCOO)(PPh3)2 2a-h. The decomposition reactions of 2c, 2g and2h have been investigated.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941270406
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  • 7
    Electronic Resource
    Electronic Resource
    Metallkomplexe mit biologisch wichtigen Liganden, LVIII. C-Allylglycin- und C-Vinylglycin-Komplexe von Palladium(II), Platin(II), Rhodium(III), Iridium(III) und deren Reaktionen mit Nucleophilen (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 1065-1073 
    Details
    ISSN: 0009-2940
    Keywords: Palladium complexes ; Platinum complexes ; Rhodium complexes ; Iridium complexes ; Glycine, C-allyl-, C-vinyl- ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Biologically Important Ligands, LVIII. - C-Allylglycine and C-Vinylglycine Complexes of Palladium(II), Platinum(II), Rhodium(III), Iridium(III) and Reactions with NucleophilesThe synthesis of the complexes (R13P)(Cl2Pt(C-allylglycine ester) (1), (2) and of (η5-C5Me5)Ir(C-allylglycinate) (6) with tridentate O,N,η2;-C—C allylglycinate as ligand is described. Addition of enolates (Nu-) to the coordinated C=C bond of 2 gives the γ-C-metallated α-amino acid ester complexes (3). In most cases the platination occurs stereoselectively to yield the five-membered metallacycle with the substitutents CH2Nu and CO2R2 in trans position. From 3d the new α-amino acid H2NCH(CO2Me)-(CH2)3C(Ph)(CO2Et)21 (4) is cleaved. The structures of 3c and 6 have been determined by X-ray diffraction. C-Vinylglycinate can be stabilized at the metal atom in the complexes (10) (M=Rh, Ir).
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240513
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  • 8
    Electronic Resource
    Electronic Resource
    Metallkomplexe von Farbstoffen, III. Übergangsmetall-Komplexe mit Pyrrolindigo (1992)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 125 (1992), S. 2347-2350 
    Details
    ISSN: 0009-2940
    Keywords: Indigo, octahydro- ; Pyrrole indigo, 4,4′-dibutyl-5,5′-dimethyl- ; Zinc complexes ; Copper complexes ; Rhodium complexes ; Iridium complexes ; Palladium complexes ; Platinum complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Metal Complexes of Dyes, III[1,2]. - Transition Metal Complexes of Pyrrole Indigo The dianions of octahydroindigo and 4,4′-dibutyl-5,5′-dimethylpyrrole indigo (L) react with metal salts and chloro-bridged complexes [(μ-Cl)M(Cl)PR3]2 (M = Pd, Pt; R = nBu, Et), [(μ-Cl)M(Cl)(η5-C5Me5)]2 (M = Rh, Ir) to give the bis-N,O chelate complexes [M(L - 2H+)]n (M = Cu, Zn), (L - 2H+)[M(Cl)(PR3)]2 (M = Pd, Pt), and (L - 2H+)[M(Cl)(η5-C5Me5)]2 (M = Rh, Ir). The electronic spectra of the soluble complexes with phosphane or C5Me5 ligands show a large bathochromic shift of the absorptions in the visible region compared to the free neutral ligands which is in accordance with PPP calculations of model compounds.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19921251103
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  • 9
    Electronic Resource
    Electronic Resource
    Hydrocarbon-Bridged Complexes, XL. Polyene-Bridged Iridium(III), Palladium(II), and Platinum(II) Complexes of Schiff Bases from α,ω-Polyene Dialdehydes and α-Amino Acids or o-AminophenolDedicated to Professor Dieter Seebach on the occasion of his 60th birthday. (1997)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 130 (1997), S. 1467-1473 
    Details
    ISSN: 0009-2940
    Keywords: Schiff bases ; Polyene dialdehydes ; α-Amino acids ; Pantamethylcyclopentadienyl complexes ; P ligands ; Iridium ; Palladium ; Platinum ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Schiff bases 1—11 were synthesized from α-amino acids or o-aminophenol and crocetindialdehyde, 2,7-dimethyloctatrienedial, terephthalaldehyde, or β,β′ -p-phenylendiacroleine. The reactions of these Schiff bases with chloro-bridged complexes [(R3P)(Cl)M(η-Cl)]2 (M = Pd, Pt) and [(C5Me5)(Cl)Ir(°Cl)]2 gave the dinuclear complexes 12-31.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19971301018
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  • 10
    Electronic Resource
    Electronic Resource
    Bis(dipeptide ester-H+) Complexes of Palladium(II) - Precursors for the Formation of Cyclotetrapeptides (1999)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1999 (1999), S. 465-469 
    Details
    ISSN: 1434-1948
    Keywords: Dipeptide ester ; Cyclic tetrapeptides ; Palladium complexes ; Coordination chemistry ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: trans-Bis(dipeptide ester)palladium 1-6 complexes with a deprotonated amide group were obtained by dehydrochlorination of trans-Cl2Pd(dipeptide ester)2 or by direct reaction of Na2PdCl4 with dipeptide ester in the presence of sodium methoxide. The structure of Pd(NH2CH2CONCH2CH2CO2CH3)2 (3) was determined by X-ray diffraction. Addition of NaOCH3 to Pd[NH2C(H)(R)NCH2CH2CO2CH3]2 [R = CH(CH3)24, CH2Ph 5] results in the formation of the corresponding complexes 7, 8 with cyclic tetrapeptides which also can be directly synthesized from the dipeptide ester and Na2PdCl4.
    Additional Material: 2 Ill.
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