A new heterodimer adenine-chain-acridine containing a mixed amido-guanidini
um linker chain was synthesized. To achieve the synthesis a new method of i
ntroduction of aminoalkyl chain at position 9 of adenine was designed. The
heterodimer interacts specifically with the abasic sites in DNA and inhibit
s the major base excision repair enzyme in Escherichia coli, Exonuclease II
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