ChemInform Abstract: Binary Complexes of Palladium(II) with Peptides and Ternary Complexes of Palladium(II) with Peptides and Nucleosides‐Nucleotides

Kasselouri, Spyridoula; Garoufis, Achilleas; Lamera-Hadjiliadis, M.; Hadjiliadis, Nick

doi:10.1002/chin.199048321

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1999

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“…intervention of metal ions. [5,17,18] Several palladium comIn the IR spectra the intensive absorptions at plexes of peptides have been structurally character-1559Ϫ1580cm Ϫ1 and at 1722Ϫ1731 cm Ϫ1 are characteristic ized. [19Ϫ21] for the deprotonated and coordinated amide group and the ester group.…”

Section: Resultsmentioning

confidence: 99%

Bis(dipeptide ester–H+) Complexes of Palladium(II) – Precursors for the Formation of Cyclotetrapeptides

Haas¹,

Ehrenstorfer-Schäfers²,

Polborn³

et al. 1999

Eur. J. Inorg. Chem.

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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.

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Section: Resultsmentioning

confidence: 99%