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Met Based Drugs. 1997;4(1):43-50.

Interaction of Pd(II) and Pt(II) Amino Acid Complexes With Dinucleotides.

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Departament de Quimica Inorgànica Universitat de Barcelona Avinguda Diagonal 647 Barcelona 08028 Spain.


The interaction of the dinucleotides d(ApG) and d(ApA) with [Pd(aa)Cl(2)], where aa = L- or D-histidine or the methyl ester of L-histidine, and with [Pt(Met)Cl(2)], where Met = L-methionine was studied by (1)H and (13)C NMR and CD measurements. In the case of the L-histidine and L-histidineOMe, the reaction with d(ApG) appeared to give the bifunctional adducts Pd(L-Histidine)N1(1)N7(2) and Pd(L-HisOMe)N1(1)N7(2), but the behavior with D-histidine suggested the formation of the monofunctional adduct Pd(D-His)N7(2). The reaction of L-histidine with d(ApA) seemed to form the bimetallic adduct (L-His)PdN7(1)N7(2)Pd(L-His). The Pt(II)-L-methionine complex in both reactions with d(ApG) and d(ApA) seemed to yield mainly adducts Pt(L-Met)N7(1)N7(2) but the existence of adducts Pt(L-Met)N1(1)N7(2) cannot be ruled out.

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