A quadruply-bonded dirhenium complex bridged by two N-1/N-6 adenate ligands
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abstract
The first structurally characterized example of a metal-metal bonded complex bridged by the DNA nucleobase adenine through the N1, N6 positions is reported. The new dirhenium compound, Re2(O2CCH2CH3) 2(9-EtA)2Cl2CH3CH 2OC6H14, binds to adenine at the sites where thymine normally engages in Watson-Crick base-pairing. Such chemistry, if it occurs in vivo, could play a role in the carcinostatic activity of tetrapropionatodirhenium complexes that are known to inhibit DNA replication. 1998 Elsevier Science S.A. All rights reserved.